git reimport

CHelperReport.txt

@@ -0,0 +1,4 @@
+18 src/chelper/D.json
+2
+0
+1

CheckerClass.template

@@ -0,0 +1,13 @@
+package %package%;
+
+import net.egork.chelper.tester.Verdict;
+import net.egork.chelper.checkers.Checker;
+
+public class %CheckerClass% implements Checker {
+    public %CheckerClass%(String parameters) {
+    }
+
+    public Verdict check(String input, String expectedOutput, String actualOutput) {
+        return Verdict.UNDECIDED;
+    }
+}

InteractorClass.template

@@ -0,0 +1,12 @@
+package %package%;
+
+import net.egork.chelper.tester.Verdict;
+import net.egork.chelper.tester.State;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+public class %InteractorClass% {
+    public Verdict interact(InputStream input, InputStream solutionOutput, OutputStream solutionInput, State<Boolean> state) {
+        return Verdict.UNDECIDED;
+    }
+}

TaskClass.template

@@ -0,0 +1,19 @@
+package %package%;
+
+import %InputClassFQN%;
+import %OutputClassFQN%;
+import solutions.ChelperSolution;
+
+
+public class %TaskClass% extends ChelperSolution {
+
+  @Override
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    super.solve(testNumber, in, out);
+  }
+
+  @Override
+  public void solve(int testNumber) {
+
+  }
+}

TestCaseClass.template

@@ -0,0 +1,34 @@
+package %package%;
+
+import net.egork.chelper.task.Test;
+import net.egork.chelper.tester.TestCase;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+public class %TestCaseClass% {
+  @TestCase
+  public Collection<Test> createTests() {
+    List<Test> tests = new ArrayList<>();
+
+    StringBuilder test, answer;
+
+    {
+      test = new StringBuilder();
+      answer = new StringBuilder();
+      makeTest1(test, answer);
+      if (answer.length() == 0) {
+        tests.add(new Test(test.toString()));
+      } else {
+        tests.add(new Test(test.toString(), answer.toString()));
+      }
+    }
+
+    return tests;
+  }
+
+  void makeTest1(StringBuilder test, StringBuilder answer) {
+
+  }
+}

TopCoderTaskClass.template

@@ -0,0 +1,7 @@
+package %package%;
+
+public class %TaskClass% {
+    public %Signature% {
+        return %DefaultValue%;
+    }
+}

TopCoderTestCaseClass.template

@@ -0,0 +1,14 @@
+package %package%;
+
+import net.egork.chelper.task.NewTopCoderTest;
+import net.egork.chelper.tester.TestCase;
+
+import java.util.Collection;
+import java.util.Collections;
+
+public class %TestCaseClass% {
+    @TestCase
+    public Collection<NewTopCoderTest> createTests() {
+        return Collections.emptyList();
+    }
+}

archive/2016.03/2016.03.31 - unsorted/Task93213.java

@@ -0,0 +1,11 @@
+package chelper;
+
+import misc.SimpleBasicSolution;
+
+public class Task93213 extends SimpleBasicSolution {
+
+  @Override
+  public void solve(int testNumber) {
+
+  }
+}

archive/2016.03/2016.03.31 - unsorted/Task93213.task

@@ -0,0 +1,21 @@
+9 Task93213
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+0
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+17 chelper.Task93213
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.03.31
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.07/2016.07.23 - unsorted/Timus1651.java

@@ -0,0 +1,105 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Queue;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class Timus1651 {
+  public void solve2(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    int[] a = in.nextIntArray(n);
+
+    int[] best = new int[100000];
+    int[] from = new int[100000];
+
+    Arrays.fill(best, Integer.MAX_VALUE);
+    best[a[0]] = 0;
+    from[a[0]] = 0;
+
+    for (int i = 1; i < n; i++) {
+      int t = a[i];
+      int p = a[i - 1];
+      if (best[t] > best[p] + 1) {
+        best[t] = best[p] + 1;
+        from[t] = i;
+      }
+    }
+
+    LinkedList<Integer> result = new LinkedList<>();
+
+    for (int c = n - 1; c >= 0;) {
+      int t = a[c];
+      result.addFirst(t);
+      c = from[t] - 1;
+    }
+
+    for (int i : result) {
+      out.print(i + " ");
+    }
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    int[] a = in.nextIntArray(n);
+
+    int M = 100100;
+
+    List<List<Integer>> edges = new ArrayList<>();
+
+    for (int i = 0; i < M; i++) {
+      edges.add(new ArrayList<>());
+    }
+
+    for (int i = 1; i < n; i++) {
+      int t = a[i];
+      int p = a[i - 1];
+      edges.get(p).add(t);
+    }
+
+    int start = a[0];
+    int finish = a[n - 1];
+
+    int[] dist = new int[M];
+    Arrays.fill(dist, Integer.MAX_VALUE);
+    dist[start] = 0;
+
+    int[] from = new int[M];
+    from[start] = -1;
+
+    List<Integer> vertices = new ArrayList<>();
+    vertices.add(a[0]);
+    while (!vertices.isEmpty()) {
+      List<Integer> newVertices = new ArrayList<>();
+
+      for (int i : vertices) {
+        for (int j : edges.get(i)) {
+          if (dist[j] == Integer.MAX_VALUE) {
+            dist[j] = dist[i] + 1;
+            from[j] = i;
+            newVertices.add(j);
+          }
+        }
+      }
+
+      vertices = newVertices;
+    }
+
+    LinkedList<Integer> result = new LinkedList<>();
+
+    for (int t = finish; t >= 0;) {
+      result.addFirst(t);
+      t = from[t];
+    }
+
+    for (int i : result) {
+      out.print(i + " ");
+    }
+  }
+}

archive/2016.07/2016.07.23 - unsorted/Timus1651.task

@@ -0,0 +1,42 @@
+9 Timus1651
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+4
+0
+19 9
+1 2 7 3 2
+8 4 8 5
+7 1 2 8 5
+1
+1
+19 9
+1 2 3 4 5 2 6 7 3
+5 1 2 3
+1
+2
+7 3
+1 2 1
+1 1
+1
+3
+5 2
+1 1
+1 1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+17 chelper.Timus1651
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.07.23
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.08/2016.08.01 - unsorted/Sazanka0G.java

@@ -0,0 +1,67 @@
+package chelper;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class Sazanka0G {
+  int[] powers = new int[10];
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int k = 6;
+
+    for (int i = 0; i < 10; i++) {
+      powers[i] = (int) Math.pow(i, k);
+    }
+
+    int[] dp = new int[10000000];
+    Arrays.fill(dp, -1);
+
+    long sum = 0;
+    for (int i = 1; i <= 1000000; i++) {
+      sum += f(i, dp);
+    }
+    out.println(sum);
+  }
+
+  int nextHappy(int n) {
+    int x = n;
+    int ans = 0;
+    while (x > 0) {
+      int t = x % 10;
+      x /= 10;
+      ans += powers[t];
+    }
+    return ans;
+  }
+
+  int f(int x, int[] dp) {
+    if (dp[x] == -1) {
+      int t = nextHappy(x);
+      dp[x] = -2;
+      dp[x] = Math.min(x, f(t, dp));
+    }
+    if (dp[x] == -2) { // found loop
+      Set<Integer> loop = new HashSet<>();
+      int t = x;
+      while (true) {
+        loop.add(t);
+        t = nextHappy(t);
+        if (t == x) {
+          break;
+        }
+      }
+      int min = Integer.MAX_VALUE;
+      for (int i : loop) {
+        min = Math.min(min, i);
+      }
+      for (int i : loop) {
+        dp[i] = min;
+      }
+    }
+    return dp[x];
+  }
+}

archive/2016.08/2016.08.01 - unsorted/Sazanka0G.task

@@ -0,0 +1,25 @@
+9 Sazanka0G
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+1
+0
+0 
+-1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+17 chelper.Sazanka0G
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.08.01
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.08/2016.08.03 - unsorted/Sazanka2J.java

@@ -0,0 +1,152 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.TreeSet;
+
+import io.InputReader;
+import io.OutputWriter;
+
+
+public class Sazanka2J {
+
+  class Edge {
+
+    int a, b;
+
+    Edge(int a, int b) {
+      this.a = a;
+      this.b = b;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) {
+        return true;
+      }
+      if (!(o instanceof Edge)) {
+        return false;
+      }
+
+      Edge edge = (Edge) o;
+
+      if (a != edge.a) {
+        return false;
+      }
+      return b == edge.b;
+
+    }
+
+    @Override
+    public int hashCode() {
+      int result = a;
+      result = 31 * result + b;
+      return result;
+    }
+  }
+
+  ArrayList<Integer>[] leftToRightEdges;
+  boolean[][] graphToLeft;
+  boolean[][] graphToRight;
+  boolean[] usedLeft;
+  boolean[] usedRight;
+  int m, n;
+
+  void dfs(int x, boolean left) {
+//    System.out.println("dfs run " + x + " " + left);
+    if (left) {
+      usedLeft[x] = true;
+      for (int i = 0; i < n; i++) {
+        if (graphToRight[x][i] && !usedRight[i]) {
+          dfs(i, false);
+        }
+      }
+    } else {
+      usedRight[x] = true;
+      for (int i = 0; i < m; i++) {
+        if (graphToLeft[x][i] && !usedLeft[i]) {
+          dfs(i, true);
+        }
+      }
+    }
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    m = in.nextInt();
+    n = in.nextInt();
+
+    leftToRightEdges = new ArrayList[m];
+    for (int i = 0; i < m; i++) {
+      leftToRightEdges[i] = new ArrayList<>();
+      int k = in.nextInt();
+      for (int j = 0; j < k; j++) {
+        leftToRightEdges[i].add(in.nextInt() - 1);
+      }
+    }
+
+    boolean[] nasucsh = new boolean[m];
+    Set<Edge> parsoch = new HashSet<>();
+    for (int i = 0; i < m; i++) {
+      int x = in.nextInt();
+      if (x > 0) {
+        parsoch.add(new Edge(i, x - 1));
+        nasucsh[i] = true;
+      }
+    }
+
+    graphToLeft = new boolean[n][m];
+    graphToRight = new boolean[m][n];
+    for (int i = 0; i < m; i++) {
+      for (int j : leftToRightEdges[i]) {
+        if (parsoch.contains(new Edge(i, j))) {
+          graphToLeft[j][i] = true;
+//          System.out.println("toleft " + j + " " + i);
+        } else {
+          graphToRight[i][j] = true;
+//          System.out.println("toright " + i + " " + j);
+        }
+      }
+    }
+
+    usedLeft = new boolean[m];
+    usedRight = new boolean[n];
+    for (int i = 0; i < m; i++) {
+      if (!nasucsh[i]) {
+//        out.println("dfs " + i);
+        dfs(i, true);
+      }
+    }
+
+    ArrayList<Integer> answerLeft = new ArrayList<>();
+    ArrayList<Integer> answerRight = new ArrayList<>();
+
+    Collections.sort(answerLeft);
+    Collections.sort(answerRight);
+
+
+    for (int i = 0; i < m; i++) {
+      if (!usedLeft[i]) {
+        answerLeft.add(i);
+      }
+    }
+    for (int i = 0; i < n; i++) {
+      if (usedRight[i]) {
+        answerRight.add(i);
+      }
+    }
+
+    out.println(answerLeft.size() + answerRight.size());
+
+    out.print(answerLeft.size() + " ");
+    for (int i : answerLeft) {
+      out.print(i + 1 + " ");
+    }
+    out.println();
+    out.print(answerRight.size() + " ");
+    for (int i : answerRight) {
+      out.print(i + 1 + " ");
+    }
+  }
+}

archive/2016.08/2016.08.03 - unsorted/Sazanka2J.task

@@ -0,0 +1,31 @@
+9 Sazanka2J
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+1
+0
+23 3 2
+2 1 2
+1 2
+1 2
+1 2 0
+9 2
+1 1
+1 2
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+17 chelper.Sazanka2J
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.08.03
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.08/2016.08.04 - unsorted/GroupedWord.java

@@ -0,0 +1,115 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class GroupedWord {
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    String[] a = in.nextStringArray(n);
+
+    out.println(restore(a));
+  }
+
+  String restore(String[] a) {
+    List<String> list = new ArrayList<>();
+    Collections.addAll(list, a);
+
+    for (char c = 'a'; c <= 'z'; c++) {
+      List<String> interesting = new ArrayList<>();
+      for (int i = 0; i < list.size();) {
+        if (list.get(i).contains("" + c)) {
+          interesting.add(list.get(i));
+          list.remove(i);
+        } else {
+          i++;
+        }
+      }
+
+      if (interesting.isEmpty()) {
+        continue;
+      }
+
+      String result = combine(c, interesting);
+      if (result == null) {
+        return "IMPOSSIBLE";
+      }
+      list.add(result);
+    }
+
+    if (list.size() > 1) {
+      return "MANY";
+    }
+    return list.get(0);
+  }
+
+  boolean isInvalid(String s) {
+    for (int i = 0; i < s.length(); i++) {
+      for (int j = i + 1; j < s.length(); j++) {
+        if (s.charAt(i) == s.charAt(j) && s.charAt(i) != s.charAt(i + 1)) {
+          return true;
+        }
+      }
+    }
+    return false;
+  }
+
+  String combine(char c, List<String> interesting) {
+    List<String> only = new ArrayList<>();
+    List<String> starts = new ArrayList<>();
+    List<String> ends = new ArrayList<>();
+    List<String> middle = new ArrayList<>();
+
+    for (String s : interesting) {
+      if (isInvalid(s)) {
+        return null;
+      }
+
+      boolean doesStart = s.charAt(0) == c;
+      boolean doesEnd = s.charAt(s.length() - 1) == c;
+
+      if (doesStart) {
+        if (doesEnd) {
+          only.add(s);
+        } else {
+          starts.add(s);
+        }
+      } else {
+        if (doesEnd) {
+          ends.add(s);
+        } else {
+          middle.add(s);
+        }
+      }
+    }
+
+    if (starts.size() > 1 || ends.size() > 1 || middle.size() > 1) {
+      return null;
+    }
+
+    if (!middle.isEmpty()) {
+      if (only.isEmpty() && starts.isEmpty() && ends.isEmpty()) {
+        return middle.get(0);
+      } else {
+        return null;
+      }
+    }
+
+    StringBuilder sb = new StringBuilder();
+    for (String s : ends) {
+      sb.append(s);
+    }
+    for (String s : only) {
+      sb.append(s);
+    }
+    for (String s : starts) {
+      sb.append(s);
+    }
+    return sb.toString();
+  }
+}

archive/2016.08/2016.08.04 - unsorted/GroupedWord.task

@@ -0,0 +1,55 @@
+11 GroupedWord
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+5
+0
+14 4
+abab
+bb
+bc
+k
+10 IMPOSSIBLE
+0
+1
+10 3
+aaa
+a
+aa
+6 aaaaaa
+1
+2
+8 2
+ab
+bba
+10 IMPOSSIBLE
+1
+3
+7 2
+te
+st
+4 stte
+1
+4
+8 3
+te
+s
+t
+4 MANY
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+19 chelper.GroupedWord
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.08.04
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.08/2016.08.04 - unsorted/Sazanka2N.java

@@ -0,0 +1,150 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.TreeSet;
+
+import io.InputReader;
+import io.OutputWriter;
+
+
+public class Sazanka2N {
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    StringBuilder[] strings = new StringBuilder[n];
+    for (int i = 0; i < n; i++) {
+      strings[i] = new StringBuilder(in.nextString());
+    }
+
+    List<StringBuilder> same = new ArrayList<>();
+    List<StringBuilder> notSame = new ArrayList<>();
+
+    for (int i = 0; i < n; i++) {
+      if (sameChars(strings[i])) {
+        same.add(strings[i]);
+      } else {
+        notSame.add(strings[i]);
+      }
+    }
+
+    for (int i = 0; i < notSame.size(); i++) {
+      char need = notSame.get(i).charAt(notSame.get(i).length() - 1);
+      for (int j = same.size() - 1; j >= 0; j--) {
+        if (same.get(j).charAt(0) == need) {
+          notSame.set(i, notSame.get(i).append(same.get(j)));
+          same.remove(j);
+        }
+      }
+    }
+
+
+    for (int i = 0; i < same.size(); i++) {
+      char need = same.get(i).charAt(0);
+      for (int j = notSame.size() - 1; j >= 0; j--) {
+        if (notSame.get(j).charAt(0) == need) {
+          same.set(i, same.get(i).append(notSame.get(j)));
+          notSame.remove(j);
+        }
+      }
+    }
+    ArrayList<StringBuilder> all = new ArrayList<>();
+    all.addAll(same);
+    all.addAll(notSame);
+
+    for (int i = 0; i < all.size(); i++) {
+      for (int j = 0; j < all.size(); j++) {
+        char need = all.get(i).charAt(all.get(i).length() - 1);
+        if (i == j) {
+          continue;
+        }
+        if (all.get(j).charAt(0) == need) {
+          all.set(i, all.get(i).append(all.get(j)));
+          all.remove(j);
+          j = 0;
+        }
+      }
+    }
+
+    if (all.size() > 1) {
+      if (isOkWords(all)) {
+        out.print("MANY");
+      } else {
+        out.print("IMPOSSIBLE");
+      }
+    } else if (isOkWord(all.get(0))) {
+      out.print(all.get(0));
+    } else {
+      out.print("IMPOSSIBLE");
+    }
+  }
+
+  private boolean sameChars(StringBuilder string) {
+    char need = string.charAt(0);
+    for (int i = 1; i < string.length(); i++) {
+      if (string.charAt(i) != need) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  boolean isOkWords(ArrayList<StringBuilder> strings) {
+    Set<Character> chars = new HashSet<>();
+    for (int i = 0; i < strings.size(); i++) {
+      if (isOkWord(strings.get(i))) {
+        Set<Character> c = charsInWord(strings.get(i));
+        int size1 = chars.size();
+        int size2 = c.size();
+        chars.addAll(c);
+        if (size1 + size2 != chars.size()) {
+          return false;
+        }
+      }
+    }
+    return true;
+  }
+
+  boolean isOkWord(StringBuilder stringBuilder) {
+    Set<Character> chars = new HashSet<>();
+    char prev = stringBuilder.charAt(0);
+    chars.add(prev);
+    for (int i = 1; i < stringBuilder.length(); i++) {
+      while (i < stringBuilder.length() && stringBuilder.charAt(i) == prev) {
+        i++;
+      }
+      if (i >= stringBuilder.length()) {
+        break;
+      }
+      if (!chars.contains(stringBuilder.charAt(i))) {
+        chars.add(stringBuilder.charAt(i));
+        prev = stringBuilder.charAt(i);
+      } else {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  Set<Character> charsInWord(StringBuilder stringBuilder) {
+    Set<Character> chars = new HashSet<>();
+    char prev = stringBuilder.charAt(0);
+    chars.add(prev);
+    for (int i = 1; i < stringBuilder.length(); i++) {
+      while (i < stringBuilder.length() && stringBuilder.charAt(i) == prev) {
+        i++;
+      }
+      if (i >= stringBuilder.length()) {
+        break;
+      }
+      if (!chars.contains(stringBuilder.charAt(i))) {
+        chars.add(stringBuilder.charAt(i));
+      } else {
+        return new TreeSet<>();
+      }
+    }
+    return chars;
+  }
+}

archive/2016.08/2016.08.04 - unsorted/Sazanka2N.task

@@ -0,0 +1,40 @@
+9 Sazanka2N
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+3
+0
+14 4
+abab
+bb
+bc
+k
+-1
+1
+1
+6 1
+abab
+-1
+1
+2
+9 2
+abab
+bb
+-1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+17 chelper.Sazanka2N
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.08.04
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.08/2016.08.17 - unsorted/Slerk.java

@@ -0,0 +1,69 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class Slerk {
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+//    int n = in.nextInt();
+    for (int n = 1; n <= 1000; n++) {
+      f(n, out);
+    }
+  }
+
+  void f(int n, OutputWriter out) {
+    int[] yearMonthDay = {1, 1, 1};
+    if (n > 220) {
+      n -= 220;
+      yearMonthDay[0] += 12;
+      yearMonthDay[0] += (n / 66);
+      n %= 66;
+      if (n == 0) {
+        yearMonthDay[0] -= 1;
+        yearMonthDay[1] = 12;
+        yearMonthDay[2] = 11;
+        out.println(yearMonthDay[0] + "/" + yearMonthDay[1] + "/" + yearMonthDay[2]);
+        return;
+      }
+      int cur = 0;
+      for (int i = 1; i < 12; i++) {
+        cur += i;
+        if (n <= cur) {
+          yearMonthDay[1] = i + 1;
+          cur -= i;
+          break;
+        }
+      }
+      n -= cur;
+      yearMonthDay[2] = n;
+      out.println(yearMonthDay[0] + "/" + yearMonthDay[1] + "/" + yearMonthDay[2]);
+    } else {
+      int[] c = {1, 3, 6, 10, 15, 21, 28, 36, 45, 55};
+      yearMonthDay[0] = 3;
+      int cur = 0;
+      for (int i = 0; i < 11; i++) {
+        cur += c[i];
+        if (n > cur) {
+          yearMonthDay[0]++;
+        } else {
+          cur -= c[i];
+          break;
+        }
+      }
+      n -= cur;
+      cur = 0;
+      for (int i = 1; i < 12; i++) {
+        cur += i;
+        if (n <= cur) {
+          yearMonthDay[1] = i + 1;
+          cur -= i;
+          break;
+        }
+      }
+      n -= cur;
+      yearMonthDay[2] = n;
+      out.println(yearMonthDay[0] + "/" + yearMonthDay[1] + "/" + yearMonthDay[2]);
+    }
+  }
+}

archive/2016.08/2016.08.27 - unsorted/Hanoi.java

@@ -0,0 +1,39 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class Hanoi {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    int[] a = new int[n];
+
+    String s = in.nextString();
+    for (int i = 0; i < n; i++) {
+      a[i] = s.charAt(i) - 'A';
+    }
+
+    for (int i = n - 1; i >= 0; i--) {
+      if (a[i] == 2) {
+        out.println("NO");
+        return;
+      }
+
+      if (a[i] == 1) {
+        for (int j = 0; j < n; j++) {
+          if (a[j] < 2) {
+            a[j] = (1 + a[j]) % 2;
+          }
+        }
+      }
+
+      for (int j = 0; j < n; j++) {
+        if (a[j] > 1) {
+          a[j] = 1 + a[j] % 2;
+        }
+      }
+    }
+
+    out.println("YES");
+  }
+}

archive/2016.08/2016.08.27 - unsorted/Hanoi.task

@@ -0,0 +1,21 @@
+5 Hanoi
+6 SINGLE
+6 CUSTOM
+9 input.txt
+6 CUSTOM
+10 output.txt
+0
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+13 chelper.Hanoi
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.08.27
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.08/2016.08.31 - unsorted/SnarkA.java

@@ -0,0 +1,9 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class SnarkA {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+  }
+}

archive/2016.08/2016.08.31 - unsorted/SnarkA.task

@@ -0,0 +1,21 @@
+6 SnarkA
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+0
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+14 chelper.SnarkA
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.08.31
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.08/2016.08.31 - unsorted/SnarkB.java

@@ -0,0 +1,138 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class SnarkB {
+
+  int[][] directions = {
+      {0, 1},
+      {0, -1},
+      {1, 0},
+      {-1, 0}
+  };
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    int m = in.nextInt();
+    int N = in.nextInt();
+    int M = in.nextInt();
+
+    int[][] a = new int[n][m];
+    for (int i = 0; i < n; i++) {
+      String s = in.nextString();
+      for (int j = 0; j < m; j++) {
+        if (s.charAt(j) == 'O') {
+          a[i][j] = 1;
+        }
+      }
+    }
+
+    int mini = n;
+    int minj = n;
+    int maxi = 0;
+    int maxj = 0;
+
+    for (int i = 0; i < n; i++) {
+      for (int j = 0; j < m; j++) {
+        if (a[i][j] != 1) {
+          continue;
+        }
+
+        mini = Math.min(mini, i);
+        minj = Math.min(minj, j);
+        maxi = Math.max(maxi, i);
+        maxj = Math.max(maxj, j);
+      }
+    }
+
+    int n2 = maxi - mini + 1;
+    int m2 = maxj - minj + 1;
+
+    int[][] a2 = new int[n2][m2];
+
+    for (int i = 0; i < n2; i++) {
+      for (int j = 0; j < m2; j++) {
+        a2[i][j] = a[i + mini][j + minj];
+      }
+    }
+
+    int[][] A = new int[N][M];
+
+    for (int i = 0; i < N; i++) {
+      String s = in.nextString();
+      for (int j = 0; j < M; j++) {
+        if (s.charAt(j) == 'O') {
+          A[i][j] = 1;
+        }
+      }
+    }
+
+    int ans = 0;
+
+    for (int i = 0; i < N; i++) {
+      for (int j = 0; j < M; j++) {
+        boolean bounds = true;
+        for (int factor = 1; factor < 1000 && bounds; factor++) {
+          boolean ok = true;
+
+          for (int ii = 0; ii < n2 * factor && ok && bounds; ii++) {
+            for (int jj = 0; jj < m2 * factor && ok && bounds; jj++) {
+              if (ii + i >= N || jj + j >= M) {
+                bounds = false;
+                ok = false;
+                break;
+              }
+
+              int io = ii / factor;
+              int jo = jj / factor;
+
+              if (a2[io][jo] != 1) {
+                continue;
+              }
+
+              if (A[ii + i][jj + j] != 1) {
+                ok = false;
+                break;
+              }
+
+
+              for (int[] direction : directions) {
+                int ii2 = ii + direction[0];
+                int jj2 = jj + direction[1];
+
+                int val1 = -1;
+                int val2 = -1;
+
+                if (ii2 + i < 0 || jj2 + j < 0 || ii2 + i >= N || jj2 + j >= M) {
+                  val2 = 0;
+                } else {
+                  val2 = A[ii2 + i][jj2 + j];
+                }
+
+                int io2 = ii2 / factor;
+                int jo2 = jj2 / factor;
+
+                if (io2 < 0 || jo2 < 0 || io2 >= n2 || jo2 >= m2 || ii2 < 0 || jj2 < 0) {
+                  val1 = 0;
+                } else {
+                  val1 = a2[io2][jo2];
+                }
+
+                if (val1 != val2) {
+                  ok = false;
+                  break;
+                }
+              }
+            }
+          }
+
+          if (ok) {
+            ans++;
+          }
+        }
+      }
+    }
+    out.println(ans);
+  }
+}

archive/2016.08/2016.08.31 - unsorted/SnarkB.task

@@ -0,0 +1,72 @@
+6 SnarkB
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+3
+0
+91 3 3 9 7
+.OO
+OOO
+.O.
+..OOOO.
+..OOOO.
+OOOOOO.
+OOOOOO.
+..OO...
+..OO...
+...OO..
+..OOO..
+...O...
+1 0
+1
+1
+100 3 3 10 7
+.OO
+OOO
+.O.
+..OOOO.
+..OOOO.
+OOOOOO.
+OOOOOO.
+..OO...
+..OO...
+.......
+...O...
+..OOO..
+...OO..
+1 1
+1
+2
+114 4 3 10 8
+.OO
+OOO
+.O.
+...
+.OO.....
+OOO...OO
+.O...OOO
+......O.
+..OOOO..
+..OOOO..
+OOOOOO..
+OOOOOO..
+..OO....
+..OO....
+1 3
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+14 chelper.SnarkB
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.08.31
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.08/2016.08.31 - unsorted/SnarkD.java

@@ -0,0 +1,29 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class SnarkD {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+
+    for (int i = 0; i < n; i++) {
+      double l = in.nextInt() / 2.0;
+      double r = in.nextInt();
+
+      if (r < l) {
+        out.println(Math.PI * r * r);
+        continue;
+      }
+
+      if (r > l * Math.sqrt(2)) {
+        out.println(4 * l * l);
+        continue;
+      }
+
+      double a = Math.acos(1.0 * l / r);
+
+      out.println((Math.PI - 4 * a) * r * r + l * Math.sin(a) * r * 4);
+    }
+  }
+}

archive/2016.08/2016.08.31 - unsorted/SnarkD.task

@@ -0,0 +1,33 @@
+6 SnarkD
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+2
+0
+11 2
+2 2
+42 24
+12 4.00
+1621.20
+1
+1
+5 1
+1 3
+1 1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+14 chelper.SnarkD
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.08.31
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.08/2016.08.31 - unsorted/SnarkE.java

@@ -0,0 +1,28 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class SnarkE {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+
+    boolean[][] a = new boolean[n][n];
+
+    for (int i = 0; i < n; i++) {
+      String s = in.nextString();
+      for (int j = 0; j < n; j++) {
+        a[i][j] = s.charAt(j) == '1';
+      }
+    }
+
+    int[][] dpi = new int[n][n];
+    int[][] dpj = new int[n][n];
+
+    for (int i = n - 1; i >= 0; i--) {
+      for (int j = 0; j < n; j++) {
+        dpi[i][j] = a[i][j] ? 1 : 0;
+      }
+    }
+  }
+}

archive/2016.08/2016.08.31 - unsorted/SnarkE.task

@@ -0,0 +1,21 @@
+6 SnarkE
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+0
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+14 chelper.SnarkE
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.08.31
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.09/2016.09.19 - unsorted/L.java

@@ -0,0 +1,73 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Queue;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class L {
+  int[] bfs(List<List<Integer>> edges, int from) {
+    int n = edges.size();
+    int[] res = new int[n];
+    Arrays.fill(res, n + 100);
+    res[from] = 0;
+
+    boolean[] visited = new boolean[n];
+    visited[from] = true;
+
+    Queue<Integer> queue = new LinkedList<>();
+    queue.add(from);
+
+    while (!queue.isEmpty()) {
+      int a = queue.poll();
+      for (int b : edges.get(a)) {
+        if (!visited[b]) {
+          res[b] = res[a] + 1;
+          visited[b] = true;
+          queue.add(b);
+        }
+      }
+    }
+
+    return res;
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt() + 1;
+    int m = in.nextInt();
+
+    int a = in.nextInt();
+    int b = in.nextInt();
+
+    List<List<Integer>> edges1 = new ArrayList<>();
+    List<List<Integer>> edges2 = new ArrayList<>();
+
+    for (int i = 0; i < n; i++) {
+      edges1.add(new ArrayList<>());
+      edges2.add(new ArrayList<>());
+    }
+
+    for (int i = 0; i < m; i++) {
+      int v1 = in.nextInt();
+      int v2 = in.nextInt();
+      edges1.get(v1).add(v2);
+      edges2.get(v2).add(v1);
+    }
+
+    int[] toPivot = bfs(edges1, 0);
+    int[] fromA = bfs(edges2, a);
+    int[] fromB = bfs(edges2, b);
+
+    int res = n + 100;
+
+    for (int i = 0; i < n; i++) {
+      res = Math.min(res, toPivot[i] + fromA[i] + fromB[i]);
+    }
+
+    out.println(res);
+  }
+}

archive/2016.09/2016.09.19 - unsorted/L.task

@@ -0,0 +1,43 @@
+1 L
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+2
+0
+39 6 8 4 6
+0 1
+0 2
+1 2
+1 5
+2 3
+2 4
+3 6
+5 6
+1 4
+1
+1
+31 4 6 3 4
+0 1
+0 2
+1 3
+2 4
+3 4
+4 3
+1 3
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.L
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.09.19
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.09/2016.09.19 - unsorted/M.java

@@ -0,0 +1,78 @@
+package chelper;
+
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.Queue;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class M {
+  boolean ask(InputReader in, OutputWriter out, int i, int j) {
+    out.println("? " + i + " " + j);
+    out.flush();
+    return in.nextLine().charAt(0) == '<';
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = Integer.parseInt(in.nextLine());
+
+    int m = Integer.highestOneBit(n) * 2;
+    int[] a = new int[2 * m];
+    Arrays.fill(a, -1);
+
+    for (int i = 0; i < n; i++) {
+      a[m + i] = i + 1;
+    }
+
+    for (int i = m - 1; i >= 1; i--) {
+      int c1 = a[2 * i];
+      int c2 = a[2 * i + 1];
+
+      if (c2 == -1 || c1 == -1) {
+        a[i] = c1;
+        continue;
+      }
+
+      a[i] = ask(in, out, c1, c2) ? c2 : c1;
+    }
+
+    int p = 1;
+
+    Queue<Integer> candidates = new LinkedList<>();
+
+    while (true) {
+      int c1 = p * 2;
+      int c2 = p * 2 + 1;
+
+      if (c1 >= 2 * m || c2 >= 2 * m) {
+        break;
+      }
+
+      if (a[c2] == a[p]) {
+        int t = c1;
+        c1 = c2;
+        c2 = t;
+      }
+
+      if (a[c2] != -1) {
+        candidates.add(a[c2]);
+      }
+      p = c1;
+    }
+
+    while (candidates.size() > 1) {
+      int a1 = candidates.poll();
+      int a2 = candidates.poll();
+
+      if (ask(in, out, a1, a2)) {
+        candidates.add(a2);
+      } else {
+        candidates.add(a1);
+      }
+    }
+
+    out.println("! " + candidates.poll());
+    out.flush();
+  }
+}

archive/2016.09/2016.09.19 - unsorted/M.task

@@ -0,0 +1,21 @@
+1 M
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+0
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.M
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.09.19
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.09/2016.09.20 - unsorted/M2.java

@@ -0,0 +1,9 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class M2 {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+  }
+}

archive/2016.09/2016.09.20 - unsorted/M2.task

@@ -0,0 +1,21 @@
+2 M2
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+0
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+10 chelper.M2
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.09.20
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.10/2016.10.22 - Canada Cup 2016/A - Jumping Ball.task

@@ -0,0 +1,39 @@
+16 A - Jumping Ball
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+3
+0
+7 4
+<<><
+
+1 2
+1
+1
+8 5
+>>>>>
+
+1 5
+1
+2
+7 4
+>><<
+
+1 0
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskA
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.10.22
+15 Canada Cup 2016
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.10/2016.10.22 - Canada Cup 2016/B - Food on the Plane.task

@@ -0,0 +1,45 @@
+21 B - Food on the Plane
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+4
+0
+3 1f
+
+2 1
+
+1
+1
+3 2d
+
+3 10
+
+1
+2
+3 4a
+
+3 11
+
+1
+3
+3 5e
+
+3 18
+
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskB
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.10.22
+15 Canada Cup 2016
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.10/2016.10.22 - Canada Cup 2016/C - Hidden Word.task

@@ -0,0 +1,34 @@
+15 C - Hidden Word
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+2
+0
+28 ABCDEFGHIJKLMNOPQRSGTUVWXYZ
+
+28 YXWVUTGHIJKLM
+ZABCDEFSRQPON
+
+1
+1
+28 BUVTYZFQSNRIWOXXGJLKACPEMDH
+
+11 Impossible
+
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskC
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.10.22
+15 Canada Cup 2016
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.10/2016.10.22 - Canada Cup 2016/D - Contest Balloons.task

@@ -0,0 +1,67 @@
+20 D - Contest Balloons
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+4
+0
+57 8
+20 1000
+32 37
+40 1000
+45 50
+16 16
+16 16
+14 1000
+2 1000
+
+2 3
+
+1
+1
+30 7
+4 4
+4 4
+4 4
+4 4
+4 4
+4 4
+5 5
+
+2 2
+
+1
+2
+145 7
+14000000003 1000000000000000000
+81000000000 88000000000
+5000000000 7000000000
+15000000000 39000000000
+46000000000 51000000000
+0 1000000000
+0 0
+
+2 2
+
+1
+3
+11 2
+0 0
+10 10
+-1
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskD
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.10.22
+15 Canada Cup 2016
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.10/2016.10.22 - Canada Cup 2016/E - Too Much Money.task

@@ -0,0 +1,46 @@
+18 E - Too Much Money
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+2
+0
+11 12
+3
+5
+3
+4
+
+2 5
+
+1
+1
+25 50
+8
+1
+2
+4
+8
+16
+37
+37
+37
+
+14 Greed is good
+
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskE
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.10.22
+15 Canada Cup 2016
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.10/2016.10.22 - Canada Cup 2016/F - Family Photos.task

@@ -0,0 +1,44 @@
+17 F - Family Photos
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+3
+0
+20 2
+12 3 4 7
+1 15 9 1
+
+2 1
+
+1
+1
+20 2
+5 4 8 8
+4 12 14 0
+
+2 4
+
+1
+2
+12 1
+0 10 0 10
+
+4 -10
+
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskF
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.10.22
+15 Canada Cup 2016
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.10/2016.10.22 - Canada Cup 2016/G - Messages on a Tree.task

@@ -0,0 +1,47 @@
+22 G - Messages on a Tree
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+3
+0
+29 6 3
+0 1 2 3 2 5
+4 6
+6 9
+5 11
+
+9 14 13 11 
+1
+1
+18 3 2
+0 1 1
+2 1
+3 1
+
+4 5 3 
+1
+2
+32 8 3
+0 1 1 2 3 3 4 5
+6 1
+8 2
+4 5
+
+7 7 6 11 
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskG
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.10.22
+15 Canada Cup 2016
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2016.10/2016.10.22 - Canada Cup 2016/TaskA.java

@@ -0,0 +1,31 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskA {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    String s = in.nextString();
+
+    int c = 0;
+
+    for (int i = 0; i < n; i++) {
+      if (s.charAt(i) == '<') {
+        c++;
+      } else {
+        break;
+      }
+    }
+
+    for (int i = 0; i < n; i++) {
+      if (s.charAt(n - i - 1) == '>') {
+        c++;
+      } else {
+        break;
+      }
+    }
+
+    out.println(c);
+  }
+}

archive/2016.10/2016.10.22 - Canada Cup 2016/TaskB.java

@@ -0,0 +1,36 @@
+package chelper;
+
+import java.math.BigInteger;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskB {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    String s = in.nextString();
+
+    long n = Long.parseLong(s.substring(0, s.length() - 1)) - 1;
+    int p = s.charAt(s.length() - 1);
+
+    BigInteger ans = BigInteger.valueOf(n / 4).multiply(BigInteger.valueOf(16));
+
+    long c = 0;
+
+    switch (p) {
+      case 'a': c += 4; break;
+      case 'b': c += 5; break;
+      case 'c': c += 6; break;
+      case 'd': c += 3; break;
+      case 'e': c += 2; break;
+      case 'f': c += 1; break;
+    }
+
+    if ((n % 4) % 2 == 1) {
+      c += 7;
+    }
+
+    ans = ans.add(BigInteger.valueOf(c));
+
+    out.println(ans);
+  }
+}

archive/2016.10/2016.10.22 - Canada Cup 2016/TaskC.java

@@ -0,0 +1,92 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskC {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    char[] ch = in.nextString().toCharArray();
+    int[] a = new int[26];
+
+    char dup = 0;
+    int[] fpos = new int[26];
+    Arrays.fill(fpos, -1);
+
+    for (int i = 0; i < 27; i++) {
+      char c = ch[i];
+      if (fpos[c - 'A'] == -1) {
+        fpos[c - 'A'] = i;
+      }
+      a[c - 'A']++;
+      if (a[c - 'A'] >= 2) {
+        if (dup == 0) {
+          dup = c;
+        } else {
+          out.println("Impossible");
+          return;
+        }
+      }
+    }
+
+
+    List<Character> pre = new ArrayList<>();
+    List<Character> mid = new ArrayList<>();
+    List<Character> post = new ArrayList<>();
+
+    int st = 0;
+
+    for (char c : ch) {
+      if (c == dup) {
+        st++;
+      } else {
+        if (st == 0) {
+          pre.add(c);
+        }
+        if (st == 1) {
+          mid.add(c);
+        }
+        if (st == 2) {
+          post.add(c);
+        }
+      }
+    }
+
+    if (mid.size() == 0) {
+      out.println("Impossible");
+      return;
+    }
+
+    int pos = 13 - mid.size() / 2 - 1;
+
+    char[] res = new char[26];
+
+    res[pos] = dup;
+
+    int strpos = fpos[dup - 'A'];
+
+    for (int i = 0; i < 27; i++) {
+      char c = ch[strpos];
+      strpos = (strpos + 1) % 27;
+      if (c == dup) {
+        continue;
+      }
+      pos = (pos + 1) % 26;
+      res[pos] = c;
+    }
+
+
+    for (int i = 0; i < 13; i++) {
+      out.print(res[i]);
+    }
+    out.println();
+
+    for (int i = 0; i < 13; i++) {
+      out.print(res[25 - i]);
+    }
+    out.println();
+  }
+}

archive/2016.10/2016.10.22 - Canada Cup 2016/TaskD.java

@@ -0,0 +1,136 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.SortedMap;
+import java.util.TreeMap;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskD {
+  class Team implements Comparable<Team> {
+    public final long score;
+    public final long weight;
+    public final long leeway;
+    private final int index;
+
+    public Team(int index, long score, long weight) {
+      this.index = index;
+      this.score = score;
+      this.weight = weight;
+      leeway = weight - score + 1;
+    }
+
+    @Override
+    public int compareTo(Team o) {
+      return Long.compare(leeway, o.leeway);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) return true;
+      if (o == null || getClass() != o.getClass()) return false;
+
+      Team team = (Team) o;
+
+      if (score != team.score) return false;
+      if (weight != team.weight) return false;
+      if (leeway != team.leeway) return false;
+      return index == team.index;
+
+    }
+
+    @Override
+    public int hashCode() {
+      int result = (int) (score ^ score >>> 32);
+      result = 31 * result + (int) (weight ^ weight >>> 32);
+      result = 31 * result + (int) (leeway ^ leeway >>> 32);
+      result = 31 * result + index;
+      return result;
+    }
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt() - 1;
+    long ourScore = in.nextLong();
+    long ourWeight = in.nextLong();
+    List<Team> teams = new ArrayList<>();
+
+    for (int i = 0; i < n; i++) {
+      Team team = new Team(i, in.nextLong(), in.nextLong());
+      teams.add(team);
+    }
+
+    Collections.sort(teams);
+
+    List<Team> left = new ArrayList<>();
+    List<Team> right = new ArrayList<>();
+
+    for (Team team : teams) {
+      if (team.score > ourScore) {
+        left.add(team);
+      } else {
+        right.add(team);
+      }
+    }
+
+    Collections.sort(right, new Comparator<Team>() {
+      @Override
+      public int compare(Team o1, Team o2) {
+        return -Long.compare(o1.score, o2.score);
+      }
+    });
+
+    long ans = left.size() + 1;
+
+    SortedMap<Long, Long> leftMap = new TreeMap<>();
+
+    for (Team team : left) {
+      if (!leftMap.containsKey(team.leeway)) {
+        leftMap.put(team.leeway, 0L);
+      }
+      leftMap.put(team.leeway, leftMap.get(team.leeway) + 1);
+    }
+
+    int rightPos = 0;
+    int ourPlace = left.size() + 1;
+
+    while (!leftMap.isEmpty()) {
+      long minLeeway = leftMap.firstKey();
+      ourScore -= minLeeway;
+      if (ourScore < 0) {
+        break;
+      }
+      long minVal = leftMap.get(minLeeway) - 1;
+      if (minVal == 0) {
+        leftMap.remove(minLeeway);
+      } else {
+        leftMap.put(minLeeway, minVal);
+      }
+      ourPlace--;
+
+      while (rightPos < right.size()) {
+        Team team = right.get(rightPos);
+        if (team.score > ourScore) {
+          if (!leftMap.containsKey(team.leeway)) {
+            leftMap.put(team.leeway, 0L);
+          }
+          leftMap.put(team.leeway, leftMap.get(team.leeway) + 1);
+          rightPos++;
+          ourPlace++;
+        } else {
+          break;
+        }
+      }
+
+      ans = Math.min(ans, ourPlace);
+    }
+
+    out.println(ans);
+  }
+}

archive/2016.10/2016.10.22 - Canada Cup 2016/TaskE.java

@@ -0,0 +1,9 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskE {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+  }
+}

archive/2016.10/2016.10.22 - Canada Cup 2016/TaskF.java

@@ -0,0 +1,9 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskF {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+  }
+}

archive/2016.10/2016.10.22 - Canada Cup 2016/TaskG.java

@@ -0,0 +1,9 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskG {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+  }
+}

archive/2016.12/2016.12.05 - unsorted/Day5.java

@@ -0,0 +1,42 @@
+package chelper;
+
+import java.math.BigInteger;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.Arrays;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class Day5 {
+  public static String toHex(byte[] bytes) {
+    BigInteger bi = new BigInteger(1, bytes);
+    return String.format("%0" + (bytes.length << 1) + "x", bi);
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    String s = in.nextString();
+
+    char[] res = new char[8];
+    int filled = 0;
+
+    for (int i = 0; true; i++) {
+      try {
+        String hash = toHex(MessageDigest.getInstance("MD5").digest((s + Integer.toString(i)).getBytes()));
+        if (hash.startsWith("00000")) {
+          int pos = hash.charAt(5) - '0';
+
+          if (pos >= 0 && pos < 8 && res[pos] == 0) {
+            res[pos] = hash.charAt(6);
+            filled += 1;
+            System.out.println(filled);
+            System.out.println(new String(res));
+            System.out.println();
+          }
+        }
+      } catch (NoSuchAlgorithmException e) {
+        throw new RuntimeException(e);
+      }
+    }
+  }
+}

archive/2016.12/2016.12.05 - unsorted/Day5.task

@@ -0,0 +1,25 @@
+4 Day5
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+1
+0
+8 wtnhxymk
+-1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+12 chelper.Day5
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2016.12.05
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.01/2017.01.07 - unsorted/A.java

@@ -0,0 +1,29 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class A {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+
+    List<Integer> res = new ArrayList<>();
+
+    if (n % 2 == 1) {
+      res.add(3);
+      n -= 3;
+    }
+
+    for (int i = 0; i < n / 2; i++) {
+      res.add(2);
+    }
+
+    out.println(res.size());
+    for (int i : res) {
+      out.print(i + " ");
+    }
+  }
+}

archive/2017.01/2017.01.07 - unsorted/A.task

@@ -0,0 +1,31 @@
+1 A
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+2
+0
+1 5
+5 2
+2 3
+1
+1
+1 6
+7 3
+2 2 2
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.A
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.01.07
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.01/2017.01.07 - unsorted/B.java

@@ -0,0 +1,25 @@
+package chelper;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class B {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    String s = in.nextString();
+    Set<Integer> set = new HashSet<>();
+
+    for (char c : s.toCharArray()) {
+      set.add((int)c);
+    }
+
+    if (set.size() != n) {
+      out.println("NO");
+    } else {
+      out.println("YES");
+    }
+  }
+}

archive/2017.01/2017.01.07 - unsorted/B.task

@@ -0,0 +1,31 @@
+1 B
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+2
+0
+5 3
+abc
+3 YES
+1
+1
+5 3
+aaa
+2 NO
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.B
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.01.07
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.01/2017.01.07 - unsorted/C.java

@@ -0,0 +1,69 @@
+package chelper;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class C {
+  class Point {
+    final int x;
+    final int y;
+
+    public Point(int x, int y) {
+      this.x = x;
+      this.y = y;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) return true;
+      if (o == null || getClass() != o.getClass()) return false;
+
+      Point point = (Point) o;
+
+      if (x != point.x) return false;
+      return y == point.y;
+
+    }
+
+    @Override
+    public int hashCode() {
+      int result = x;
+      result = 31 * result + y;
+      return result;
+    }
+
+    public Point sub(Point p) {
+      return new Point(x - p.x, y - p.y);
+    }
+
+    public Point add(Point p) {
+      return new Point(x + p.x, y + p.y);
+    }
+
+    @Override
+    public String toString() {
+      return x + " " + y;
+    }
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    Point a = new Point(in.nextInt(), in.nextInt());
+    Point b = new Point(in.nextInt(), in.nextInt());
+    Point c = new Point(in.nextInt(), in.nextInt());
+
+    Set<Point> points = new HashSet<>();
+
+    points.add(a.add(b.sub(a)).add(c.sub(a)));
+    points.add(b.add(a.sub(b)).add(c.sub(b)));
+    points.add(c.add(a.sub(c)).add(b.sub(c)));
+
+    out.println(points.size());
+
+    for (Point point : points) {
+      out.println(point);
+    }
+  }
+}

archive/2017.01/2017.01.07 - unsorted/C.task

@@ -0,0 +1,30 @@
+1 C
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+1
+0
+11 0 0
+1 0
+0 1
+15 3
+1 -1
+-1 1
+1 1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.C
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.01.07
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.01/2017.01.07 - unsorted/E.java

@@ -0,0 +1,38 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class E {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    long n = in.nextLong();
+    long m = in.nextLong();
+
+    out.println("? 0 0");
+    out.flush();
+
+    long dist1 = in.nextLong();
+
+    long dist2 = n + m - dist1;
+
+    if (dist1 <= dist2) {
+      out.println("? " + dist1 + " 0");
+      out.flush();
+
+      long dist3 = in.nextLong() / 2;
+      long x = dist1 - dist3;
+      long y = dist3;
+      out.println("! " + x + " " + y);
+      out.flush();
+    } else {
+      out.println("? " + (n - dist2) + " " + m);
+      out.flush();
+
+      long dist3 = in.nextLong() / 2;
+      long x = (n - dist2) + dist3;
+      long y = m - dist3;
+      out.println("! " + x + " " + y);
+      out.flush();
+    }
+  }
+}

archive/2017.01/2017.01.07 - unsorted/E.task

@@ -0,0 +1,25 @@
+1 E
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+1
+0
+3 3 3
+0 
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.E
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.01.07
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.01/2017.01.07 - unsorted/F.java

@@ -0,0 +1,87 @@
+package chelper;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class F {
+  class Point {
+    final int x;
+    final int y;
+
+    public Point(int x, int y) {
+      this.x = x;
+      this.y = y;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) return true;
+      if (o == null || getClass() != o.getClass()) return false;
+
+      Point point = (Point) o;
+
+      if (x != point.x) return false;
+      return y == point.y;
+
+    }
+
+    @Override
+    public int hashCode() {
+      int result = x;
+      result = 31 * result + y;
+      return result;
+    }
+
+    public Point sub(Point p) {
+      return new Point(x - p.x, y - p.y);
+    }
+
+    public Point add(Point p) {
+      return new Point(x + p.x, y + p.y);
+    }
+
+    @Override
+    public String toString() {
+      return x + " " + y;
+    }
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    int m = in.nextInt();
+
+    boolean[][] a = new boolean[n][m];
+
+    Map<Integer, Point> locations = new HashMap<>();
+    for (int i = 0; i < n; i++) {
+      for (int j = 0; j < m; j++) {
+        int t = in.nextInt();
+        locations.put(t, new Point(i, j));
+      }
+    }
+
+    for (int i = 0; i < n * m; i++) {
+      int t = in.nextInt();
+      Point p = locations.get(t);
+
+      int x = p.x;
+      int y = p.y;
+
+      if (x < n - 1) {
+        if (!a[x + 1][y]) {
+          out.println("NO");
+          return;
+        }
+      }
+
+      a[x][y] = true;
+    }
+
+    out.println("YES");
+  }
+}

archive/2017.01/2017.01.07 - unsorted/F.task

@@ -0,0 +1,42 @@
+1 F
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+3
+0
+19 2 2
+1 2
+3 4
+3 4 1 2
+3 YES
+1
+1
+19 2 2
+1 2
+3 4
+3 1 4 2
+3 YES
+1
+2
+27 2 3
+1 2 3
+4 5 6
+6 1 5 2 4 3
+2 NO
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.F
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.01.07
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.01/2017.01.07 - unsorted/I.java

@@ -0,0 +1,99 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class I {
+  int n;
+  int[] a, b;
+  Map<Integer, Integer> l1, l2;
+
+  void swap(int i, int j) {
+    int p1 = l1.get(a[i]);
+    int p2 = l2.get(a[i]);
+    if (p1 != i) {
+      int c = p1;
+      p1 = p2;
+      p2 = c;
+    }
+
+    int p3 = l1.get(b[j]);
+    int p4 = l2.get(b[j]);
+    if (p3 != n + j) {
+      int c = p3;
+      p3 = p4;
+      p4 = c;
+    }
+
+    l1.put(a[i], n + j);
+    l2.put(a[i], p2);
+
+    l1.put(b[j], i);
+    l2.put(b[j], p4);
+
+    int c = a[i];
+    a[i] = b[j];
+    b[j] = c;
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    n = in.nextInt();
+    a = in.nextIntArray(n);
+    b = in.nextIntArray(n);
+
+    l1 = new HashMap<>();
+    l2 = new HashMap<>();
+
+    for (int i = 0; i < n; i++) {
+      if (!l1.containsKey(a[i])) {
+        l1.put(a[i], i);
+      } else {
+        l2.put(a[i], i);
+      }
+    }
+
+    for (int i = 0; i < n; i++) {
+      if (!l1.containsKey(b[i])) {
+        l1.put(b[i], i + n);
+      } else {
+        l2.put(b[i], i + n);
+      }
+    }
+
+    List<String> actions = new ArrayList<>();
+
+    for (int i = 0; i < n; i++) {
+      int t = a[i];
+
+      int p1 = l1.get(t);
+      int p2 = l2.get(t);
+
+      if (p2 < p1) {
+        int c = p1;
+        p1 = p2;
+        p2 = c;
+      }
+
+      if (p2 < n) {
+        swap(p2, i);
+        actions.add((p2 + 1) + " " + (i + 1));
+      } else {
+        p2 -= n;
+        swap(p2, p2);
+        actions.add((p2 + 1) + " " + (p2 + 1));
+        swap(p2, i);
+        actions.add((p2 + 1) + " " + (i + 1));
+      }
+    }
+
+    out.println(actions.size());
+    for (String action : actions) {
+      out.println(action);
+    }
+  }
+}

archive/2017.01/2017.01.07 - unsorted/I.task

@@ -0,0 +1,27 @@
+1 I
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+1
+0
+13 3
+1 1 2
+2 3 3
+-1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.I
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.01.07
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.01/2017.01.10 - unsorted/TaskK.java

@@ -0,0 +1,97 @@
+package chelper;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskK {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    int[] a = new int[n];
+    int[] b = new int[n];
+    for (int i = 0; i < n; i++) {
+      a[i] = in.nextInt() - 1;
+    }
+    for (int i = 0; i < n; i++) {
+      b[i] = in.nextInt() - 1;
+    }
+    int[][] position = new int[2][n];
+    Arrays.fill(position[0], -1);
+    for (int i = 0; i < n; i++) {
+      int x = a[i];
+      if (position[0][x] == -1) {
+        position[0][x] = i;
+      } else {
+        position[1][x] = i;
+      }
+    }
+    for (int i = 0; i < n; i++) {
+      int x = b[i];
+      if (position[0][x] == -1) {
+        position[0][x] = i + n;
+      } else {
+        position[1][x] = i + n;
+      }
+    }
+    List<String> answer = new ArrayList<>();
+    for (int i = 0; i < n; i++) {
+      if (a[i] == b[i]) {
+        continue;
+      }
+      int x = a[i];
+      int pos = position[0][x] == i ? position[1][x] : position[0][x];
+      if (pos < n) {
+        answer.add((pos + 1) + " " + (i + 1));
+        int c = b[i];
+        a[pos] = c;
+        b[i] = x;
+        if (position[0][x] == i) {
+          position[1][x] = i + n;
+        } else {
+          position[0][x] = i + n;
+        }
+        if (position[0][c] == i + n) {
+          position[0][c] = pos;
+        } else {
+          position[1][c] = pos;
+        }
+      } else {
+        pos -= n;
+        answer.add((pos + 1) + " " + (pos + 1));
+        answer.add((pos + 1) + " " + (i + 1));
+        int c = b[i];
+        int d = a[pos];
+        int posx1 = i;
+        int posc = i + n;
+        int posd = pos;
+        int posx2 = pos + n;
+        a[pos] = c;
+        b[i] = x;
+        b[pos] = d;
+        if (position[0][x] == posx1) {
+          position[1][x] = posc;
+        } else {
+          position[0][x] = posc;
+        }
+        if (position[0][c] == posc) {
+          position[0][c] = posd;
+        } else {
+          position[1][c] = posd;
+        }
+        if (position[0][d] == posd) {
+          position[0][d] = posx2;
+        } else {
+          position[1][d] = posx2;
+        }
+      }
+    }
+    out.println(answer.size());
+    for (String s : answer) {
+      out.println(s);
+    }
+  }
+}

archive/2017.01/2017.01.10 - unsorted/TaskK.task

@@ -0,0 +1,27 @@
+5 TaskK
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+1
+0
+13 3
+1 1 2
+2 3 3
+1 0
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+13 chelper.TaskK
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.01.10
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.02/2017.02.11 - unsorted/Pizza.java

@@ -0,0 +1,424 @@
+package chelper;
+
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class Pizza {
+
+  class Cut implements Comparable<Cut> {
+    public final int x, y, xs, ys, size;
+
+    public Cut(int x, int y, int xs, int ys) {
+      this.x = x;
+      this.y = y;
+      this.xs = xs;
+      this.ys = ys;
+      size = xs * ys;
+    }
+
+    boolean okay(Solution solution) {
+      if (x + xs > n || y + ys > m) {
+        return false;
+      }
+
+      int size = xs * ys;
+      if (size > maxSize) {
+        return false;
+      }
+
+      int tomatoCount = prefixSum[x + xs - 1][y + ys - 1];
+      if (x > 0) {
+        tomatoCount -= prefixSum[x - 1][y + ys - 1];
+      }
+      if (y > 0) {
+        tomatoCount -= prefixSum[x + xs - 1][y - 1];
+      }
+      if (x > 0 && y > 0) {
+        tomatoCount += prefixSum[x - 1][y - 1];
+      }
+
+      if (tomatoCount < minEach) {
+        return false;
+      }
+      if (size - tomatoCount < minEach) {
+        return false;
+      }
+
+      for (int i = 0; i < xs; i++) {
+        for (int j = 0; j < ys; j++) {
+          if (solution.occupied[x + i][y + j]) {
+            return false;
+          }
+        }
+      }
+
+      return true;
+    }
+
+    @Override
+    public String toString() {
+      return "Cut{" +
+          "x=" + x +
+          ", y=" + y +
+          ", xs=" + xs +
+          ", ys=" + ys +
+          '}';
+    }
+
+    @Override
+    public int compareTo(Cut o) {
+      int t = Integer.compare(x, o.x);
+      if (t != 0) {
+        return t;
+      }
+      return Integer.compare(y, o.y);
+    }
+  }
+
+  int randInt(int from, int to) {
+    return from + random.nextInt(to - from);
+  }
+
+  class Solution {
+    final List<Cut> cuts;
+    boolean[][] occupied = new boolean[n][m];
+    boolean[][] starts = new boolean[n][m];
+    LinkedList<Integer> available = new LinkedList<>();
+    int size = 0;
+
+    Solution() {
+      cuts = new ArrayList<>();
+      updateFree();
+    }
+
+    Solution(Solution other) {
+      cuts = new ArrayList<>(other.cuts);
+      size = other.size;
+      for (int i = 0; i < n; i++) {
+        for (int j = 0; j < m; j++) {
+          occupied[i][j] = other.occupied[i][j];
+        }
+      }
+      updateFree();
+    }
+
+    @Override
+    public String toString() {
+      List<Cut> sorted = new ArrayList<>(cuts);
+      Collections.sort(sorted);
+
+      StringWriter sw = new StringWriter();
+      OutputWriter out = new OutputWriter(sw);
+
+      out.println(cuts.size());
+      for (Cut cut : sorted) {
+        out.printf("%d %d %d %d\n", cut.x, cut.y, cut.x + cut.xs - 1, cut.y + cut.ys - 1);
+      }
+      sw.flush();
+
+      return sw.toString();
+    }
+
+    void updateFree() {
+      available.clear();
+      for (int i = 0; i < n; i++) {
+        for (int j = 0; j < m; j++) {
+          if (!occupied[i][j]) {
+            available.add(i * m + j);
+          }
+        }
+      }
+    }
+
+    Cut makeRandomCut() {
+      int tries = 0;
+      while (tries < maxTries && !available.isEmpty()) {
+        int x = available.getFirst() / m;
+        int y = available.getFirst() % m;
+        available.removeFirst();
+
+        /*int x = random.nextInt(n);
+        int y = random.nextInt(m);*/
+
+        if (occupied[x][y]) {
+          tries++;
+          continue;
+        }
+
+        /*int xs = random.nextInt(maxSize - 1) + 1;
+        int maxYs = maxSize / xs;
+        int ys = maxYs == 1 ? 1 : (random.nextInt(maxYs - 1) + 1);
+
+        if (Math.random() < 0.5) {
+          int t = xs;
+          xs = ys;
+          ys = t;
+        }*/
+
+        int xs = randInt(1, sizeVariation);
+        int ys = randInt(2 * minEach / xs, maxSize / xs + 1);
+
+        if (Math.random() < 0.5) {
+          int t = xs;
+          xs = ys;
+          ys = t;
+        }
+
+        Cut cut = new Cut(x, y, xs, ys);
+        if (!cut.okay(this)) {
+          tries++;
+          continue;
+        }
+
+        return cut;
+      }
+      return null;
+    }
+
+    void add(Cut cut) {
+      cuts.add(cut);
+
+      starts[cut.x][cut.y] = true;
+      starts[cut.x][cut.y + cut.ys - 1] = true;
+      starts[cut.x + cut.xs - 1][cut.y] = true;
+      starts[cut.x + cut.xs - 1][cut.y + cut.ys - 1] = true;
+
+      for (int i = 0; i < cut.xs; i++) {
+        for (int j = 0; j < cut.ys; j++) {
+          occupied[cut.x + i][cut.y + j] = true;
+        }
+      }
+
+      size += cut.size;
+    }
+
+    void remove(int removeIndex) {
+      Cut cut = cuts.get(removeIndex);
+
+      cuts.remove(removeIndex);
+
+      for (int i = 0; i < cut.xs; i++) {
+        for (int j = 0; j < cut.ys; j++) {
+          occupied[cut.x + i][cut.y + j] = false;
+//          available.add((cut.x + i) * m + cut.y + j);
+        }
+      }
+
+      size -= cut.size;
+    }
+
+    void greedy() {
+      for (int i = 0; i < n; i++) {
+        for (int j = 0; j < m; j++) {
+          if (occupied[i][j]) {
+            continue;
+          }
+          for (int ys = maxSize; ys >= 1; ys--) {
+            for (int xs = maxSize / ys + 1; xs >= 1; xs--) {
+              if (xs * ys < minEach * 2) {
+                break;
+              }
+              Cut cut = new Cut(i, j, xs, ys);
+              if (cut.okay(this)) {
+                add(cut);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  Solution tryProb() {
+    Solution solution = new Solution();
+    solution.greedy();
+    return solution;
+  }
+
+  int n, m, minEach, maxSize;
+  boolean[][] map;
+  int[][] prefixSum;
+  Random random = new Random();
+
+  int iterations = 1000000;
+  int printEach = 100000;
+  //  int updateAvailableEach = 1000;
+  double maxTemp = 1;
+  double scoreModifier = 1e0;
+  int sizeVariation = 8;
+  int maxTries = 10;
+  double dropProbability = 0.5;
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    String name = in.nextString();
+    n = in.nextInt();
+    m = in.nextInt();
+    minEach = in.nextInt();
+    maxSize = in.nextInt();
+
+//    n = 100;
+//    m = 100;
+
+    map = new boolean[n][m];
+    prefixSum = new int[n][m];
+
+    for (int i = 0; i < n; i++) {
+      String s = in.nextLine();
+      for (int j = 0; j < m; j++) {
+        map[i][j] = s.charAt(j) == 'T';
+      }
+    }
+
+    for (int i = 0; i < n; i++) {
+      for (int j = 0; j < m; j++) {
+        if (map[i][j]) {
+          prefixSum[i][j]++;
+        }
+
+        if (i > 0) {
+          prefixSum[i][j] += prefixSum[i - 1][j];
+        }
+        if (j > 0) {
+          prefixSum[i][j] += prefixSum[i][j - 1];
+        }
+        if (i > 0 && j > 0) {
+          prefixSum[i][j] -= prefixSum[i - 1][j - 1];
+        }
+      }
+    }
+
+    Solution solution = new Solution();
+    int globalMax = 0;
+    Solution bestSolution = null;
+    int skips = 0;
+
+
+
+    /*for (int i = 0; i < iterations; i++) {
+      int newSize;
+      boolean remove;
+      int removeIndex = 0;
+      Cut newCut = null;
+
+      if (!solution.cuts.isEmpty() && Math.random() < dropProbability) {
+        remove = true;
+        removeIndex = random.nextInt(solution.cuts.size());
+        newSize = solution.size - solution.cuts.get(removeIndex).size;
+      } else {
+        newCut = solution.makeRandomCut();
+        if (newCut == null) {
+          i--;
+          skips++;
+          continue;
+        } else {
+          remove = false;
+          newSize = solution.size + newCut.size;
+        }
+      }
+
+      if (solution.available.size() == 0) {
+        solution.updateFree();
+      }
+
+      double temp = maxTemp * (1 - (double)i / iterations);
+
+      double prob = Math.exp(((double)newSize - solution.size) * scoreModifier / temp);
+
+      if (newSize > solution.size || Math.random() < prob) {
+        if (remove) {
+          solution.remove(removeIndex);
+        } else {
+          solution.add(newCut);
+        }
+      }
+
+      if (solution.size > globalMax) {
+        globalMax = solution.size;
+//        bestSolution = new Solution(solution);
+      }
+      if (i % printEach == 0) {
+        System.out.println("---");
+        System.out.printf("Temp %.2f\n", temp);
+        System.out.printf("Count %d\n", solution.cuts.size());
+        System.out.printf("Size %d\n", solution.size);
+        System.out.printf("TSize %d\n", n * m);
+        System.out.printf("%%   %.4f\n", (double)solution.size / n / m);
+        System.out.printf("Max %d\n", globalMax);
+        System.out.printf("Avail %d\n", solution.available.size());
+        System.out.printf("Skips %d\n", skips);
+        System.out.printf("Iters %d\n", i);
+        System.out.println("---");
+      }
+    }*/
+
+
+    solution = tryProb();
+
+    if (bestSolution != null) {
+      solution = bestSolution;
+    }
+    System.out.println(solution.size);
+
+    try {
+      FileWriter fileWriter = new FileWriter(name + ".txt");
+      fileWriter.write(solution.toString());
+      fileWriter.close();
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+
+    try {
+      FileWriter fileWriter = new FileWriter("map.txt");
+      OutputWriter out2 = new OutputWriter(fileWriter);
+      for (int i = 0; i < n; i++) {
+        for (int j = 0; j < m; j++) {
+          if (map[i][j] && solution.occupied[i][j] && solution.starts[i][j]) {
+            out2.print('T');
+          }
+          if (!map[i][j] && solution.occupied[i][j] && solution.starts[i][j]) {
+            out2.print('M');
+          }
+          if (map[i][j] && solution.occupied[i][j] && !solution.starts[i][j]) {
+            out2.print('t');
+          }
+          if (!map[i][j] && solution.occupied[i][j] && !solution.starts[i][j]) {
+            out2.print('m');
+          }
+          if (map[i][j] && !solution.occupied[i][j]) {
+            out2.print(',');
+          }
+          if (!map[i][j] && !solution.occupied[i][j]) {
+            out2.print('.');
+          }
+        }
+        out2.println();
+      }
+      out2.flush();
+      fileWriter.close();
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+
+    Map<String, Integer> stats = new HashMap<>();
+    for (Cut cut : solution.cuts) {
+      String s = cut.xs + "x" + cut.ys;
+      stats.putIfAbsent(s, 0);
+      stats.put(s, stats.get(s) + 1);
+    }
+
+    for (Map.Entry<String, Integer> entry : stats.entrySet()) {
+      System.out.println(entry.getKey() + " " + entry.getValue());
+    }
+  }
+}

archive/2017.02/2017.02.23 - unsorted/Video.java

@@ -0,0 +1,210 @@
+package chelper;
+
+import java.io.FileNotFoundException;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Random;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class Video {
+  int cacheSize;
+  List<Cache> caches = new ArrayList<>();
+  List<Endpoint> endpoints = new ArrayList<>();
+  List<Integer> itemSizes = new ArrayList<>();
+  List<Request> requests = new ArrayList<>();
+  long totalWeight = 0;
+
+  OutputWriter log;
+
+  static boolean firstRun = true;
+
+  Solution makeSolution(double[] features) {
+    Solution solution = new Solution(caches, cacheSize);
+
+    List<Request> requestsLocal = new ArrayList<>(requests);
+
+    Collections.sort(requestsLocal, new Comparator<Request>() {
+      @Override
+      public int compare(Request o1, Request o2) {
+        double w1 = 1.0
+            * Math.pow(o1.weight, features[0])
+            * Math.pow(o1.endpoint.serverDelay, features[1])
+            * Math.pow(itemSizes.get(o1.itemId), features[2]);
+        double w2 = 1.0
+            * Math.pow(o2.weight, features[0])
+            * Math.pow(o2.endpoint.serverDelay, features[1])
+            * Math.pow(itemSizes.get(o2.itemId), features[2]);
+
+        return Double.compare(w1, w2);
+      }
+    });
+    Collections.reverse(requestsLocal);
+
+
+    for (Request request : requestsLocal) {
+      Endpoint endpoint = request.endpoint;
+      int itemId = request.itemId;
+      int weight = request.weight;
+      int itemSize = itemSizes.get(itemId);
+
+      for (Cache cache : endpoint.cacheDelaysSorted) {
+        if (solution.cacheSets.get(cache).contains(itemId)) {
+          break;
+        }
+
+        int sizeLeft = solution.sizeLeft.get(cache);
+
+        if (sizeLeft >= itemSize) {
+          solution.cacheSets.get(cache).add(itemId);
+          solution.sizeLeft.put(cache, sizeLeft - itemSize);
+          break;
+        }
+      }
+    }
+
+    return solution;
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    String testName = in.nextLine();
+    try {
+      log = new OutputWriter(new FileWriter("log", true));
+    } catch (FileNotFoundException e) {
+      throw new RuntimeException(e);
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+    if (firstRun) {
+      log.println("========================================================================");
+    }
+    firstRun = false;
+    log.println("-----");
+
+    log.println(testName);
+
+    int itemCounts = in.nextInt();
+    int endpointCount = in.nextInt();
+    int requestCount = in.nextInt();
+    int cacheCount = in.nextInt();
+    cacheSize = in.nextInt();
+
+    for (int i = 0; i < itemCounts; i++) {
+      itemSizes.add(in.nextInt());
+    }
+
+    for (int i = 0; i < cacheCount; i++) {
+      caches.add(new Cache(i));
+    }
+
+
+    for (int i = 0; i < endpointCount; i++) {
+      Endpoint endpoint = new Endpoint(i, in.nextInt());
+
+      int connectionCount = in.nextInt();
+      for (int j = 0; j < connectionCount; j++) {
+        int serverId = in.nextInt();
+        int delay = in.nextInt();
+
+        Cache cache = caches.get(serverId);
+
+        cache.endpointDelays.put(endpoint, delay);
+        endpoint.cacheDelays.put(cache, delay);
+      }
+
+      endpoints.add(endpoint);
+    }
+
+    for (Endpoint endpoint : endpoints) {
+      endpoint.sortCacheDelays();
+    }
+
+    for (int i = 0; i < requestCount; i++) {
+      int itemId = in.nextInt();
+      int endpointId = in.nextInt();
+      int requestWeight = in.nextInt();
+
+      totalWeight += requestWeight;
+
+      Endpoint endpoint = endpoints.get(endpointId);
+      endpoint.itemRequests.put(itemId, requestWeight);
+      requests.add(new Request(itemId, endpoint, requestWeight));
+    }
+
+    double bestScore = -1;
+    Solution bestSolution = null;
+    String bestDesc = "";
+
+    double[] features = new double[]{1, 1.5, -0.5};
+    Solution solution = makeSolution(features);
+    double score = solution.getScore(requests, totalWeight);
+
+    Random random = new Random();
+
+    double temp = 1;
+    for (int i = 0; i < 1000; i++) {
+      double T = temp * (1 - (double)i / 100);
+
+      double[] newFeatures = new double[features.length];
+      for (int j = 0; j < features.length; j++) {
+        newFeatures[j] = features[j];
+      }
+
+      int index = random.nextInt(features.length);
+      int sign = 1;
+      if (Math.random() < 0.5) {
+        sign = -1;
+      }
+      newFeatures[index] += sign * Math.random() * T;
+
+      Solution newSolution = makeSolution(newFeatures);
+      double newScore = newSolution.getScore(requests, totalWeight);
+      System.out.println(i);
+      System.out.println(Arrays.toString(features));
+      System.out.println(newScore);
+      System.out.flush();
+
+      if (newScore > bestScore) {
+        bestScore = newScore;
+        bestSolution = newSolution;
+      }
+
+      double prob = Math.exp((newScore - score) / temp);
+
+      if (newScore > score || Math.random() < prob) {
+        solution = newSolution;
+        features = newFeatures;
+        score = newScore;
+      }
+    }
+
+    log.println("Score: " + bestScore);
+    log.println("Desc: " + Arrays.toString(features));
+    log.println("TotalWeight: " + totalWeight);
+
+    try {
+      out = new OutputWriter("hashcode/" + testName + ".out");
+    } catch (FileNotFoundException e) {
+      throw new RuntimeException(e);
+    }
+
+    out.println(caches.size());
+    for (Cache cache : caches) {
+      out.print(cache.id + " ");
+      for (Integer itemId : bestSolution.cacheSets.get(cache)) {
+        out.print(itemId + " ");
+      }
+      out.println();
+    }
+
+    out.flush();
+
+    log.flush();
+  }
+}

archive/2017.03/2017.03.04 - unsorted/B.java

@@ -0,0 +1,64 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class B {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    int pol = in.nextInt();
+    if (pol == 0) {
+      out.print(-1);
+      return;
+    }
+
+    List<Chelik> cheliki = new ArrayList<>();
+    for (int i = 2; i <= n; i++) {
+      cheliki.add(new Chelik(i, in.nextInt()));
+    }
+    Collections.sort(cheliki);
+    cheliki.add(0, new Chelik(1, pol));
+
+    List<String> answer = new ArrayList<>();
+
+    int left = 0;
+    for (int right = 1; right < n; right++) {
+      if (left == right) {
+        out.print(-1);
+        return;
+      }
+      if (cheliki.get(left).dzun > 0) {
+        answer.add(cheliki.get(left).index + " " + cheliki.get(right).index);
+        cheliki.get(left).dzun--;
+      } else {
+        left++;
+        right--;
+      }
+    }
+
+    out.println(answer.size());
+    for (String s : answer) {
+      out.println(s);
+    }
+  }
+
+  class Chelik implements Comparable<Chelik> {
+    int index;
+    int dzun;
+
+    public Chelik(int index, int dzun) {
+      this.index = index;
+      this.dzun = dzun;
+    }
+
+    @Override
+    public int compareTo(Chelik o) {
+      return Integer.compare(o.dzun, dzun);
+    }
+  }
+}

archive/2017.03/2017.03.04 - unsorted/B.task

@@ -0,0 +1,37 @@
+1 B
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+3
+0
+10 
+4
+1 2 1 0
+-1
+1
+1
+13 6
+2 0 1 3 2 0
+-1
+1
+2
+7 3
+0 2 2
+-1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.B
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.04
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.04 - unsorted/C.java

@@ -0,0 +1,121 @@
+package chelper;
+
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.Queue;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class C {
+  char[] dirsOrderLabels = {'D', 'L', 'R', 'U'};
+  int[][] dirsOrder = {
+      {1, 0},  //D
+      {0, -1}, //L
+      {0, 1},  //R
+      {-1, 0}, //U
+  };
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    int m = in.nextInt();
+    int k = in.nextInt();
+
+    int startX = -1;
+    int startY = -1;
+
+    boolean[][] map = new boolean[n][m];
+
+    for (int i = 0; i < n; i++) {
+      String s = in.nextLine();
+      for (int j = 0; j < m; j++) {
+        map[i][j] = s.charAt(j) != '*';
+        if (s.charAt(j) == 'X') {
+          startX = i;
+          startY = j;
+        }
+      }
+    }
+
+    int[][] distances = new int[n][m];
+    for (int i = 0; i < n; i++) {
+      Arrays.fill(distances[i], Integer.MAX_VALUE);
+    }
+
+    Queue<int[]> queue = new LinkedList<>();
+    queue.add(new int[]{startX, startY});
+    distances[startX][startY] = 0;
+
+    while (!queue.isEmpty()) {
+      int[] posAr = queue.poll();
+      int x = posAr[0];
+      int y = posAr[1];
+
+      for (int[] dir : dirsOrder) {
+        int xx = x + dir[0];
+        int yy = y + dir[1];
+
+        if (xx < 0 || xx >= n || yy < 0 || yy >= m) {
+          continue;
+        }
+
+        if (!map[xx][yy]) {
+          continue;
+        }
+
+        if (distances[xx][yy] <= distances[x][y] + 1) {
+          continue;
+        }
+
+        distances[xx][yy] = distances[x][y] + 1;
+        queue.add(new int[]{xx, yy});
+      }
+    }
+
+    StringBuilder answer = new StringBuilder();
+
+    int x = startX;
+    int y = startY;
+    int timeLeft = k;
+
+    while (timeLeft >= distances[x][y] && timeLeft > 0) {
+      boolean ok = false;
+      for (int i = 0; i < 4; i++) {
+        int[] dir = dirsOrder[i];
+        int xx = x + dir[0];
+        int yy = y + dir[1];
+
+        if (xx < 0 || xx >= n || yy < 0 || yy >= m) {
+          continue;
+        }
+
+        if (!map[xx][yy]) {
+          continue;
+        }
+
+        if (timeLeft == distances[x][y] && distances[xx][yy] >= distances[x][y]) {
+          continue;
+        }
+
+        ok = true;
+        x = xx;
+        y = yy;
+        timeLeft--;
+        answer.append(dirsOrderLabels[i]);
+        break;
+      }
+
+      if (!ok) {
+        out.println("IMPOSSIBLE");
+        return;
+      }
+    }
+
+    if (timeLeft != 0 || x != startX || y != startY) {
+      out.println("IMPOSSIBLE");
+      return;
+    }
+
+    out.println(answer);
+  }
+}

archive/2017.03/2017.03.04 - unsorted/C.task

@@ -0,0 +1,81 @@
+1 C
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+9
+0
+13 2 3 2
+.**
+X..
+2 RL
+1
+1
+41 5 6 14
+..***.
+*...X.
+..*...
+..*.**
+....*.
+14 DLDDLLLRRRUURU
+1
+2
+17 3 3 4
+***
+*X*
+***
+11 IMPOSSIBLE
+
+1
+3
+13 2 3 4
+.**
+X..
+-1
+1
+4
+29 4 5 5
+*****
+*X***
+*.***
+*.***
+-1
+1
+5
+11 2 2 1
+.X
+..
+10 IMPOSSIBLE
+1
+6
+11 2 2 4
+.X
+..
+4 DLRU
+1
+7
+7 1 1 2
+X
+10 IMPOSSIBLE
+1
+8
+9 2 1 2
+X
+.
+2 DU
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.C
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.04
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.05 - unsorted/D.java

@@ -0,0 +1,45 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class D {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    int k = in.nextInt();
+    int M = 1 << 16;
+    int[] a = new int[M];
+    for (int i = 0; i < n; i++) {
+      int x = in.nextInt();
+      a[x]++;
+    }
+
+    List<Integer> masks = new ArrayList<>();
+    for (int i = 0; i < M; i++) {
+      if (Integer.bitCount(i) == k) {
+        masks.add(i);
+      }
+    }
+
+    long answer = 0;
+    for (int i = 0; i < M; i++) {
+      if (a[i] == 0) {
+        continue;
+      }
+      for (int mask : masks) {
+        if ((i ^ mask) < i) {
+          answer += a[i] * a[i ^ mask];
+        }
+        if ((i ^ mask) == i) {
+          answer += a[i] * (a[i] - 1) / 2;
+        }
+      }
+    }
+
+    out.println(answer);
+  }
+
+}

archive/2017.03/2017.03.05 - unsorted/D.task

@@ -0,0 +1,31 @@
+1 D
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+2
+0
+11 4 1
+0 3 2 1
+1 4
+1
+1
+27 6 0
+200 100 100 100 200 200
+1 6
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.D
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.05
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.11 - unsorted/D.java

@@ -0,0 +1,62 @@
+package chelper;
+
+import java.util.Arrays;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class D {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    char[] seq = in.nextLine().toCharArray();
+
+    int x[] = new int[n];
+    int y[] = new int[n];
+    int currentDepth = 0;
+    int maxDepth = 0;
+
+    int w = 0;
+    for (int i = 0; i < n; i++) {
+      if (seq[i] == '[') {
+        currentDepth++;
+        w++;
+      }
+      maxDepth = Math.max(maxDepth, currentDepth);
+      y[i] = currentDepth;
+      if (seq[i] == ']') {
+        currentDepth--;
+        w++;
+        if (seq[i - 1] == '[') {
+          w += 3;
+        }
+      }
+      x[i] = w - 1;
+    }
+
+    int h = maxDepth * 2 + 1;
+
+    char[][] answer = new char[h][w];
+
+    for (int i = 0; i < h; i++) {
+      Arrays.fill(answer[i], ' ');
+    }
+
+    for (int i = 0; i < n; i++) {
+      for (int j = 0; j <= maxDepth - y[i]; j++) {
+        answer[h / 2 - j][x[i]] = '|';
+        answer[h / 2 + j][x[i]] = '|';
+      }
+      answer[h / 2 - (maxDepth - y[i] + 1)][x[i]] = '+';
+      answer[h / 2 + (maxDepth - y[i] + 1)][x[i]] = '+';
+
+      int dx = seq[i] == '[' ? 1 : -1;
+
+      answer[h / 2 - (maxDepth - y[i] + 1)][x[i] + dx] = '-';
+      answer[h / 2 + (maxDepth - y[i] + 1)][x[i] + dx] = '-';
+    }
+
+    for (int i = 0; i < h; i++) {
+      out.println(new String(answer[i]));
+    }
+  }
+}

archive/2017.03/2017.03.11 - unsorted/D.task

@@ -0,0 +1,74 @@
+1 D
+6 SINGLE
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+7
+0
+10 8
+[[][]][]
+89 +-        -++- -+
+|+- -++- -+||   |
+||   ||   |||   |
+|+- -++- -+||   |
++-        -++- -+
+1
+1
+8 6
+[[[]]]
+69 +-     -+
+|+-   -+|
+||+- -+||
+|||   |||
+||+- -+||
+|+-   -+|
++-     -+
+1
+2
+8 6
+[[][]]
+64 +-        -+
+|+- -++- -+|
+||   ||   ||
+|+- -++- -+|
++-        -+
+1
+3
+4 2
+[]
+17 +- -+
+|   |
++- -+
+1
+4
+6 4
+[][]
+32 +- -++- -+
+|   ||   |
++- -++- -+
+1
+5
+19 16
+[[[[[][]][]][]]]
+-1
+1
+6
+104 100
+[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]
+-1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+9 chelper.D
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.11
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/A - Bear and Friendship Condition.task

@@ -0,0 +1,58 @@
+33 A - Bear and Friendship Condition
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+4
+0
+16 4 3
+1 3
+3 4
+1 4
+
+4 YES
+
+1
+1
+20 4 4
+3 1
+2 3
+3 4
+1 2
+
+3 NO
+
+1
+2
+22 10 4
+4 3
+5 10
+8 9
+1 2
+
+4 YES
+
+1
+3
+12 3 2
+1 2
+2 3
+
+3 NO
+
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskA
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.18
+21 VK Cup 2017 - Round 1
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/B - Bear and Different Names.task

@@ -0,0 +1,39 @@
+28 B - Bear and Different Names
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+3
+0
+25 8 3
+NO NO YES YES YES NO
+
+42 Adam Bob Bob Cpqepqwer Limak Adam Bob Adam
+1
+1
+11 9 8
+YES NO
+
+45 R Q Ccccccccc Ccocc Ccc So Strong Samples Ccc
+1
+2
+10 3 2
+NO NO
+
+8 Na Na Na
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskB
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.18
+21 VK Cup 2017 - Round 1
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/C - Bear and Tree Jumps.task

@@ -0,0 +1,58 @@
+23 C - Bear and Tree Jumps
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+3
+0
+24 6 2
+1 2
+1 3
+2 4
+2 5
+4 6
+
+3 20
+
+1
+1
+58 13 3
+1 2
+3 2
+4 2
+5 2
+3 6
+10 6
+6 7
+6 13
+5 8
+5 9
+9 11
+11 12
+
+4 114
+
+1
+2
+12 3 5
+2 1
+3 1
+
+2 3
+
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskC
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.18
+21 VK Cup 2017 - Round 1
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/D - Bear and Company.task

@@ -0,0 +1,56 @@
+20 D - Bear and Company
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+5
+0
+7 4
+VKVK
+
+2 3
+
+1
+1
+8 5
+BVVKV
+
+2 2
+
+1
+2
+10 7
+VVKEVKK
+
+2 3
+
+1
+3
+24 20
+VKVKVVVKVOVKVQKKKVVK
+
+2 8
+
+1
+4
+8 5
+LIMAK
+
+2 0
+
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskD
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.18
+21 VK Cup 2017 - Round 1
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/E - Bear and Rectangle Strips.task

@@ -0,0 +1,45 @@
+29 E - Bear and Rectangle Strips
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+3
+0
+42 6
+70 70 70 70 70 -15
+90 -60 -30 30 -30 15
+
+2 3
+
+1
+1
+19 4
+0 -1 0 0
+0 0 1 0
+
+2 6
+
+1
+2
+68 3
+1000000000 999999999 -1000000000
+999999999 -1000000000 -999999998
+
+2 1
+
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskE
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.18
+21 VK Cup 2017 - Round 1
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/F - Bear and Isomorphic Points.task

@@ -0,0 +1,49 @@
+30 F - Bear and Isomorphic Points
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+1
+0
+109 4
+4
+5 3
+0 1
+10 1
+3 51
+3
+-999123 700000
+-950000 123456
+-950000 987654
+3
+2 3
+10 -1
+-4 6
+5
+1 3
+5 2
+6 1
+4 4
+-3 3
+
+73 250.000000000000
+100000000000.000000000000
+0.000000000000
+6.562500000000
+
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskF
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.03.18
+21 VK Cup 2017 - Round 1
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/TaskA.java

@@ -0,0 +1,9 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskA {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+  }
+}

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/TaskB.java

@@ -0,0 +1,9 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskB {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+  }
+}

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/TaskC.java

@@ -0,0 +1,128 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskC {
+  int n, k;
+  List<List<Integer>> edges;
+
+  long ans = 0;
+
+  long[] rotCount(long[] x) {
+    long[] res = new long[k];
+    for (int i = 0; i < k; i++) {
+      res[i] = x[(i - 1 + k) % k];
+    }
+    return res;
+  }
+
+  long[] rotAcc(long[] x) {
+    long[] res = new long[k];
+    for (int i = 0; i < k; i++) {
+      res[i] = x[(i - 1 + k) % k];
+    }
+    return res;
+  }
+
+  long[] copy(long[] x) {
+    return Arrays.copyOf(x, k);
+  }
+
+  void add(long[] a, long[] b) {
+    for (int i = 0; i < k; i++) {
+      a[i] += b[i];
+    }
+  }
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    n = in.nextInt();
+    k = in.nextInt();
+
+    visited = new boolean[n];
+
+    edges = new ArrayList<>();
+    for (int i = 0; i < n; i++) {
+      edges.add(new ArrayList<>());
+    }
+
+    for (int i = 0; i < n - 1; i++) {
+      int a = in.nextInt() - 1;
+      int b = in.nextInt() - 1;
+
+      edges.get(a).add(b);
+      edges.get(b).add(a);
+    }
+
+//    long[] count = new long[k];
+    long[] acc = new long[k];
+
+    Result ans = dfs(0, 0, acc);
+
+    out.println(ans.cost / 2);
+  }
+
+  class Result {
+    long cost;
+    long[] acc;
+
+    public Result(long cost, long[] acc) {
+      this.cost = cost;
+      this.acc = acc;
+    }
+  }
+
+  boolean[] visited;
+
+//  void addComp(long[] a, long[] b) {
+//    for (int i = 0; i < k; i++) {
+//      for (int j = 0; j < k; j++) {
+//        if (i == j) {
+//          continue;
+//        }
+//        long t = a[i] + b[j];
+//        if (i + j >= k) {
+//          ans += ;
+//        }
+//      }
+//    }
+//  }
+
+  Result dfs(int v, long parentCost, long[] accParent) {
+    visited[v] = true;
+
+    long costParentChildren = parentCost;
+    long costChildren = 0;
+
+    long[] accParentChildren = new long[k];
+    costParentChildren += rot(accParentChildren, accParent);
+    accParentChildren[0] += 1;
+
+    long[] accChildren = new long[k];
+    accChildren[0] += 1;
+
+    for (Integer child : edges.get(v)) {
+      if (visited[child]) {
+        continue;
+      }
+
+      Result atChild = dfs(child, costParentChildren, accParentChildren);
+
+      long[] childAcc = new long[k];
+
+      costChildren += atChild.cost;
+      costChildren += rot(childAcc, atChild.acc);
+      costParentChildren += atChild.cost;
+      costParentChildren += rot(childAcc, atChild.acc);
+
+      add(accParentChildren, childAcc);
+      add(accChildren, childAcc);
+    }
+
+    return new Result(costChildren, accChildren);
+  }
+}

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/TaskD.java

@@ -0,0 +1,43 @@
+package chelper;
+
+import java.util.Arrays;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskD {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    char[] a = in.nextString().toCharArray();
+
+    char c1 = 'V';
+    char c2 = 'K';
+
+    int[][] dp = new int[n][3];
+    for (int i = 0; i < n; i++) {
+      Arrays.fill(dp[i], 100000);
+    }
+
+    if (a[0] == c1) {
+      dp[0][0] = 0;
+    } else if (a[0] == c2) {
+      dp[0][1] = 0;
+    } else {
+      dp[0][2] = 0;
+    }
+
+    for (int i = 1; i < n; i++) {
+      if (a[i] == c1) {
+        dp[i][2] = Math.min(dp[i][2], dp[i - 1][0]);
+        dp[i][2] = Math.min(dp[i][2], dp[i - 1][1]);
+        dp[i][2] = Math.min(dp[i][2], dp[i - 1][2]);
+      } else if (a[i] == c2) {
+
+      } else {
+        dp[i][2] = Math.min(dp[i][2], dp[i - 1][0]);
+        dp[i][2] = Math.min(dp[i][2], dp[i - 1][1]);
+        dp[i][2] = Math.min(dp[i][2], dp[i - 1][2]);
+      }
+    }
+  }
+}

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/TaskE.java

@@ -0,0 +1,9 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskE {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+  }
+}

archive/2017.03/2017.03.18 - VK Cup 2017 - Round 1/TaskF.java

@@ -0,0 +1,9 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskF {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+  }
+}

archive/2017.04/2017.04.05 - VK Cup 2017 - Wild Card Round 1/I - Composing Of String.task

@@ -0,0 +1,58 @@
+23 I - Composing Of String
+6 SINGLE
+8 STANDARD
+-1
+8 STANDARD
+-1
+4
+0
+13 3
+a
+aa
+a
+aaa
+
+2 2
+
+1
+1
+21 4
+ab
+aab
+aa
+bb
+baaab
+
+2 3
+
+1
+2
+18 2
+aaa
+bbb
+aaacbbb
+
+3 -1
+
+1
+3
+10 2
+ax
+xb
+ab
+1 2
+1
+11 src/chelper
+8 -Xmx256M
+4 Main
+13 chelper.TaskI
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.04.05
+31 VK Cup 2017 - Wild Card Round 1
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.04/2017.04.05 - VK Cup 2017 - Wild Card Round 1/TaskI.java

@@ -0,0 +1,61 @@
+package chelper;
+
+import java.util.Arrays;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class TaskI {
+
+  public static final int MAGIC_KEK = 1000000;
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+    String[] strings = new String[n];
+
+    for (int i = 0; i < n; i++) {
+      strings[i] = in.nextString();
+    }
+
+    String e = in.nextString();
+
+    int m = e.length();
+
+    int[] dp = new int[m + 1];
+
+    Arrays.fill(dp, MAGIC_KEK);
+
+    dp[0] = 0;
+
+    for (int i = 0; i < n; i++) {
+      for (int j = 0; j < strings[i].length(); j++) {
+        int c = 0;
+        for (int k = 0; j + k < strings[i].length() && c < e.length(); k++) {
+          if (strings[i].charAt(j + k) == e.charAt(c)) {
+            c++;
+            dp[c] = Math.max(dp[c], 1);
+          }
+        }
+      }
+    }
+
+    for (int i = 0; i < m; i++) {
+      for (int j = 0; j < n; j++) {
+        int c = 0;
+        for (int k = 0; i + c < e.length() && k < strings[j].length(); k++) {
+          if (strings[j].charAt(k) == e.charAt(i + c)) {
+            c++;
+            dp[i + c] = Math.min(dp[i + c], dp[i] + 1);
+          }
+        }
+      }
+    }
+
+    if (dp[m] >= MAGIC_KEK) {
+      out.println(-1);
+    } else {
+
+      out.println(dp[m]);
+    }
+  }
+}

archive/2017.04/2017.04.08 - unsorted/TaskA.java

@@ -0,0 +1,49 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+import misc.GCJSolution;
+
+public class TaskA extends GCJSolution {
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    wrapSolve(testNumber, in, out);
+  }
+
+  @Override
+  public void solve(int testNumber) {
+    char[] s = in.nextString().toCharArray();
+    int k = in.nextInt();
+
+    int n = s.length;
+
+    boolean[] a = new boolean[n];
+    for (int i = 0; i < n; i++) {
+      a[i] = s[i] == '+';
+    }
+
+    int ans = 0;
+
+    for (int i = 0; i + k - 1 < n; i++) {
+      if (!a[i]) {
+        for (int j = 0; j < k; j++) {
+          a[i + j] ^= true;
+        }
+        ans++;
+      }
+    }
+
+    boolean ok = true;
+
+    for (int i = 0; i < n; i++) {
+      ok &= a[i];
+    }
+
+    if (ok) {
+      out.println(ans);
+    } else {
+      out.println("IMPOSSIBLE");
+    }
+
+  }
+}

archive/2017.04/2017.04.08 - unsorted/TaskA.task

@@ -0,0 +1,240 @@
+5 TaskA
+12 MULTI_NUMBER
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+3
+0
+28 3
+---+-++- 3
++++++ 4
+-+-+- 4
+41 Case #1: 3
+Case #2: 0
+Case #3: IMPOSSIBLE
+1
+1
+897 100
+---+-++- 3
++++++ 4
+-+-+- 4
+---- 2
+-++----+-- 7
+--+ 2
++-+-+-+-+- 2
++--- 2
+++ 2
+++-+ 2
+-++- 2
++-+-+-+-+- 3
+-+++ 3
+---+ 3
+-+++++++++ 2
++--+ 2
+---------- 10
+-++++++- 7
+--++- 2
+--------- 3
+-+-+ 2
+---- 3
+---+ 2
+-------++ 7
++-- 2
+--++ 3
+-+++++++-+ 2
+++++++++++ 10
++- 2
+-+-+++-+- 6
+-+++ 2
+--+- 2
+-+- 2
++++----+ 3
+-+--++-- 3
+-+--+-+--+ 2
+------- 7
+-++++++++- 10
+-++- 3
++----+ 4
+-+-- 2
++--+-++-++ 4
++-- 3
++-++ 3
++-+- 3
+++++++ 5
++++--+++ 2
++-+- 2
+--+- 3
+++- 2
+-+------- 9
+++-+ 3
++-+-+-+- 3
+---------- 3
+-+++++++-- 2
+-- 2
+-++++++++- 9
++-+-++-+ 5
++--+ 3
+---------- 5
+++-- 2
++-+ 3
+-+- 3
+-+ 2
+--- 2
++++ 3
++-++ 2
++++++ 5
+----++-+ 4
++--- 3
+-+-- 3
+++++ 2
+---------- 2
++-+-- 3
++-----+ 5
+--++ 2
++-+-+-+ 3
+++++++-+++ 10
+--+ 3
++++- 3
+++- 3
+--- 3
+++++ 3
+-++ 3
+++-- 3
+-+-+-+-+-+ 2
+----- 4
+-++ 2
++-+ 2
+-+-+++- 6
+-++++++++- 8
++---+++--- 6
++++ 2
+-++++++++- 2
+---++++++ 4
++++- 2
+-+-+ 3
+-+-+--+ 2
++-+-+-+-+ 3
+---------+ 9
+
+-1
+1
+2
+49828 100
+---+-++- 3
++++++ 4
+-+-+- 4
+++++-+---++++-+-++-+-++---++++-+-+-++++---++-+--++++++-++-+-++++-++++-++--++-+--+-+-+-+++-+-----+-+---+-+---+-+-++---+--+-+----+--+++--+++--+--++-++---++-++++++-+------+---+-++++-+-++++----+--+---+++++-+-+--+++--------+++--++--+---++++---++-++++++-++-+--+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-+---++++-+-++-+-++---++++-+-+-++++---++-+--++++++-++-+-++++-++++-++--++-+--+-+-+-+++-+-----+-+---+-+---+-+-++---+--+-+----+--+++--+++--+--++-++---++-++++++-+------+---+-++++-+-++++----+--+---+++++-+-+--+++--------+++--++--+---++++---++-++++++-++-+--++ 437
++-++++++--+--++-+-+++--+-++++-+--++-+++++----+--+-++++++------+--+-+-++----+++---+-+-------+-++-+--+-++---++-------++-----++++---+---+-++-+++--+-+++---++---+--+++++------+-++++-+++++--+--+-+-++-+-++++++-+--+------------++-+--+--++-++-+-+--++++---++++-++-+----++-+-++--++-+-+--++-----++++--+-++---+-+-+++++-++-+++-+-+-++-+---+++++--++----+++- 17
+-+++--++-+-+-+++----+--++----++--++-++--+----+--++++-+-+-+++----+++-+-+---+++++++-+--++--++-+++-+-++-++--+++--++++++-+++++---+---+-++-+-+++++++++++---+--++-+--++--+--+++++---+-++++--++---+-+++---+- 41
+---+---+--+++-+++++-++-+--++-++--+++-----++++++++---+--+++--+++-++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---+---+--+++-+++++-++-+--++-++--+++-----++++++++---+--+++--+++-+ 665
+++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++-++- 2
+++++++++---+-+-+++--++++--+-+---++++-------+-+-+-+--+++---+++--+--+---+++-+-+----+++--++-++++-+----+--+--+-+-+----+++++-+--+-++++-----+-----+++++--------++++++-++-+--+---++-+-+--+-++-+-+++---++++---+--++-+------++++++---+-+-++--++++++++--++--++-++++--++----++---++-+-+-+-+--++--+----++-+--+--++-++++-+-+-------+++-+-+-----+-+--+--+--+--+--+++-++---+--+---+-+-+-++-+----+++-++-+--+++-++-----+-++------++++-++-++-+-+-++--++---+--+--+-+-++--+-+-+-+--+++++-+-++--++++-----+-+--+--+++++++--++++++++++++++++++++++++++++---+-+-+++--++++--+-+---+++--------+-+-+-+--+++---+++--+--+---+++-+-+----+++--++-++++-+----+--+--+-+-+----+++++-+--+-++++-----+-----+++++--------++++++-++-+--+---++-+-+--+-++-+-+++---++++---+--++-+------++++++---+-+-++--++++++++--++--++-++++--++----++---++-+-+-+-+--++--+----++-+--+--++-++++-+-+-------+++-+-+-----+-+--+--+--+--+--+++-++---+--+---+-+-+-++-+----+++-++-+--+++-++-----+-++------++++-++-++-+-+-++--++---+--+--+-+-++--+-+-+-+--+++++-+-++--++++-----+-+--+--+++++++--++++ 505
+--+--+-+++-+--+--+++-----+--+-+-+-----+-++-++++---++++--+-+--++-+------+-+++----+++-++-+++-+--+-+------+--+-+--+--+---+---+---++++--+---+-++-++--+-+++-+-+-++--+-+----+--+------+++-+-++++-+++++----+-+---+--+-++-+-+++--++--+++--+++++-+---+-+++-++-+-++-++++++++----+-+--+-+++--+--++++-+----+---+-++-++++-++--+-+-++---+------+-++++-+-+-++++--+-+-+--+---------+--++-+------+++++------+-++-++-+--+---+-++-+-+-+++----+++++-+++-+---++-++-++++-+--++-+--+---++-----++-+-++---+---++-++----+----+++--+-+--++-+-+++--+--++--+-+++-+++++++++--++---+++-+-+--+-+--++--+-----+-+-+-+--+---++++---++-+---+++-++----+-++--++-+---+++----+++--++++--+--+-+-++-++-++--+-++++----+-++--++-++-++--+-++--++-+- 137
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 2
++-++-+++++---++-++++--+-+-++-+-+++-+++-+-+--+--+-+++++++---+-++++---++--+++--+++-+-++----+-+++-+---+-++-+---+-----+-++-+--++++---+-+-+-+-++-----++++-+++-++-++++---++++++++---+-+-+-++-++-+-+-++++++++-+-+---+-+++--++--+-------+++-+----+++--++---++---+-+--++++-+---+-+++-+--+-+++-+++++-+--+-++----+++-+-+-+-+--+++++----+---+--+----+-+------+-+-+-+-++-+-++-+-++--+-+--+---+--++---+----+- 168
+-+ 2
++---++++++++++-----++--++++++++++----------++------+-----++--++++++++-------++++-+----++-+++++----+++-+-----++++--------------++++---------++----------++++----+++++------+++-+--------+-+-++++++-++---+++-------------+++-+++---------++-+-----++++++++++++--------+---+++++------------+++---++-------+++++-+-++++-------+++++++++-----++++-++-+-----++++------++-----+---+---------------------------------------------------+++----------+++++--++----------++++++++++--++++++-+++++--++--------+++++++----+-++++--+-----++++---+-+++++----++++++++++++++----+++++++++--++++++++++----++++-----++++-+---+-++++++++-+-+------+--+++---+++++++++++++---+---+++++++++--+-+++++------------++++++++-+++-----++++++++++++---+++--+++++++-----+-+----+++++++---------+++++----+--+-+++++----++++++--+++++-+++-+++++++++++++ 415
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 3
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+--++--++-++-+++-++--++++--+-+-++-++--+--+---+--++------+++-+++++++--++--++-++-+++-++--++++--+-+-++-++--+--+---+--++------+++-+ 66
++++++--+-+------+++--+---------+++++++++-++++++-+++------++--------++++-++++++---+-+++-----++++-+-+-+------+-++++-+-++++-+--------+++----+-++-+++++++--+--++++++-+--+---+---+--+-----+-+++-----+++++-+-++++-+---+-+++---+------++++--+++-----++--+++-++---+++--+++-+-++-+--++-+-+-------------++-+-+---++++-++-+++-----++++++----------++---+-+--++++---++---++++-+++--+-----+++++-+++-+--+----+-++-++++-----+----------+--+--+++++----+-------++-+-+++-+-++++--++++---+++++-+++-++++-+++-++-+++--+++++-----------+--+--+++--++++++++-------+---+++-++++--+++-++ 90
+++-++-++-++--++--++-+-+++--+++-++-------++++---++-+-+-+-+-+--+--+++-+-+-+-+----+---+--+++--++--+---+--+-+-++-----+-+----+-++--++-+---++-+-+----+-+++--+-+++++-++-+----++---+++++++--+-+--++-++-++-+-----+-++++++++++-++-+-+-++++-+-++--+--+-+----++-++---+-++-+-++-++-++---++++-----+--++-++--+++++-+-+---+-+-+++++--++-++-+++-++++-+++++-+++--+-++-+++++---++++--+----+++++---++-+-++--+--++-+++-++++---+++-+++-++++++--+++---+++++--+-+-+-+---+-++-+------++++--+-+-+--++-+-++--++-++--+--+-++-+-++-++---+-++-+--++-+++-+-----++---+--+-+++++-+-+-+----+++++-+---+++++---+++--+--+++--+++--+-++---+-++-+++-+++---++-+----+---+----++-+--+----++++-+-+-+--+-+++--------+-------+++++++++-----+-----+++-+- 86
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+---------- 2
++--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 998
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1000
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++++-++-+---++--+++++-+-+--+-+-+--+--++-++-+--+++------+++--+--+----+++-++--+++-+++++++--++--++--++--+++-+++-+--++--+++++-+-++--+---++++++-++-++++-+-+-++--+--++--++++-+-----+-+---++++--+-+++---++++-+-+-+---+-+--+-++-++-++++-+-+--++++++----+--++-+-++-+----+++--+---++-++++++++-+-+++--+++-++++--+--+-------+-+---+---+-+-++---+---+++----+++--+++-++++++-+--+-+++--+++-+++-+++-++--+--+----++++-++++++++-++---+--+-+---+--++++++-+-+++++-+-+-++-+++-+------+--+--+---++--+---++++-++----++++--+-+--+++-+++-+-+++-+++++-+++++-+++-++++-+++++++--+-+--+-+-+-++-+++----++--++---+-+-+++--+-++-+------+----+--+++-++-++++-----+-+++--++++-++--++-------+-+--+++++++-+++-+-+--+---+-++++-+-++-++-++-+-+--++++-+-----++-++++----+-++--+-+---+++++++++-++--+---+---++++++--++---+++-+++-++--+-+-+-+--+++-+--+--+-++-+ 242
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+++++++++++-----------++++++++++---------++-+++++++++++++++---+-+++++-------+------+++++-+++++++++++++------++++++----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------+++++++++++----------+++++++++--+---------------+++-+-----+++++++-++++++-----+-------------++++++------+++ 562
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+
+-1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+13 chelper.TaskA
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.04.08
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.04/2017.04.08 - unsorted/TaskB.java

@@ -0,0 +1,53 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import io.InputReader;
+import io.OutputWriter;
+import misc.GCJSolution;
+
+
+public class TaskB extends GCJSolution {
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    wrapSolve(testNumber, in, out);
+  }
+
+  long parse(char[] s) {
+    return Long.parseLong(new String(s));
+  }
+
+  boolean isGood(char[] s) {
+    char[] s2 = Arrays.copyOf(s, s.length);
+    Arrays.sort(s2);
+    return Arrays.equals(s, s2);
+  }
+
+  @Override
+  public void solve(int testNumber) {
+    char[] s = in.nextString().toCharArray();
+
+    List<char[]> vars = new ArrayList<>();
+
+    vars.add(Arrays.copyOf(s, s.length));
+
+    for (int i = 0; i < s.length; i++) {
+      char[] s2 = Arrays.copyOf(s, s.length);
+
+      if (s[i] >= '1') {
+        s2[i] = (char) (s[i] - 1);
+        for (int j = i + 1; j < s.length; j++) {
+          s2[j] = '9';
+        }
+        vars.add(s2);
+      }
+    }
+
+    vars = vars.stream().filter(this::isGood).sorted((o1, o2) -> Long.compare(parse(o1), parse(o2))).collect(Collectors.toList());
+
+    out.println(parse(vars.get(vars.size() - 1)));
+  }
+}

archive/2017.04/2017.04.08 - unsorted/TaskB.task

@@ -0,0 +1,244 @@
+5 TaskB
+12 MULTI_NUMBER
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+3
+0
+31 4
+132
+1000
+7
+111111111111111110
+65 Case #1: 129
+Case #2: 999
+Case #3: 7
+Case #4: 99999999999999999
+
+
+1
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+
+-1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+13 chelper.TaskB
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.04.08
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.04/2017.04.09 - unsorted/TaskC.java

@@ -0,0 +1,48 @@
+package chelper;
+
+import java.util.SortedMap;
+import java.util.TreeMap;
+
+import io.InputReader;
+import io.OutputWriter;
+import misc.GCJSolution;
+import misc.SimpleSavingChelperSolution;
+
+
+public class TaskC extends GCJSolution {
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    wrapSolve(testNumber, in, out);
+  }
+
+  void add(SortedMap<Long, Long> map, long x, long c) {
+    map.putIfAbsent(x, 0L);
+    map.put(x, map.get(x) + c);
+  }
+
+  @Override
+  public void solve(int testNumber) {
+    long n = in.nextLong();
+    long k = in.nextLong();
+
+    long c = 0;
+
+    SortedMap<Long, Long> map = new TreeMap<>();
+    map.put(n, 1L);
+
+    while (true) {
+      long l = map.lastKey();
+      long lc = map.get(l);
+      map.remove(l);
+
+      if (c + lc >= k) {
+        out.println((l / 2) + " " + ((l - 1) / 2));
+        return;
+      }
+      c += lc;
+
+      add(map, l / 2, lc);
+      add(map, (l - 1) / 2, lc);
+    }
+  }
+}

archive/2017.04/2017.04.09 - unsorted/TaskC.task

@@ -0,0 +1,357 @@
+5 TaskC
+12 MULTI_NUMBER
+8 STANDARD
+9 input.txt
+8 STANDARD
+10 output.txt
+5
+0
+30 5
+4 2
+5 2
+6 2
+1000 1000
+1000 1
+68 Case #1: 1 0
+Case #2: 1 0
+Case #3: 1 1
+Case #4: 0 0
+Case #5: 500 499
+1
+1
+122 4
+1000000000000000000 123
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+-1
+1
+11 src/chelper
+16 -Xmx256m -Xss64m
+4 Main
+13 chelper.TaskC
+39 net.egork.chelper.checkers.TokenChecker
+0 
+0
+10 2017.04.09
+0 
+1
+14 io.InputReader
+15 io.OutputWriter
+0
+0

archive/2017.04/2017.04.16 - unsorted/TaskA.java

@@ -0,0 +1,44 @@
+package chelper;
+
+import io.InputReader;
+import io.OutputWriter;
+import misc.SimpleSavingChelperSolution;
+
+
+public class TaskA extends SimpleSavingChelperSolution {
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    wrapSolve(testNumber, in, out);
+  }
+
+  @Override
+  public void solve(int testNumber) {
+    int n = in.nextInt();
+    int m = in.nextInt();
+
+    int[][] a = new int[n][m];
+
+    int c = 1;
+
+    for (int i = 0; i < 100; i++) {
+      for (int j = 0; j < 100; j++) {
+        int x = i - j;
+        int y = j;
+
+        if (x < 0 || y < 0 || x >= n || y >= m) {
+          continue;
+        }
+
+        a[x][y] = c;
+        c++;
+      }
+    }
+
+    for (int i = 0; i < n; i++) {
+      for (int j = 0; j < m; j++) {
+        out.print(a[n - 1 - i][m - 1 - j] + " ");
+      }
+      out.println();
+    }
+  }
+}