git reimport

archive/2017.09/2017.09.18 - unsorted/C.java

@@ -0,0 +1,58 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import io.InputReader;
+import io.OutputWriter;
+import misc.SimpleSavingChelperSolution;
+
+
+public class C 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();
+    long k = in.nextLong();
+
+    long left = k;
+    StringBuilder sb = new StringBuilder();
+
+    long current = -1;
+
+    for (int i = 0; i < n; i++) {
+      if (current + 1 <= left) {
+        current++;
+        left -= current;
+        sb.append('(');
+
+        continue;
+      }
+
+      while (current + 1 > left) {
+        sb.append(')');
+        current--;
+      }
+
+      current++;
+      left -= current;
+      sb.append('(');
+    }
+
+    while (current + 1 > 0) {
+      sb.append(')');
+      current--;
+    }
+
+    if (left > 0) {
+      out.println("Impossible");
+      return;
+    }
+
+    out.println(sb.toString());
+  }
+}