git reimport

archive/2018.10/2018.10.15 - SNCKQL19/CHEFPRMS.java

@@ -0,0 +1,47 @@
+package chelper;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import io.InputReader;
+import io.OutputWriter;
+import misc.SimpleSavingChelperSolution;
+import misc.Stuff;
+
+
+public class CHEFPRMS extends SimpleSavingChelperSolution {
+
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    wrapSolve(testNumber, in, out);
+  }
+
+
+  List<Integer> primes = Stuff.generatePrimes(1000);
+  Set<Integer> semiprimes = new HashSet<>();
+  Set<Integer> sums = new HashSet<>();
+
+  {
+    for (int i = 0; i < primes.size(); i++) {
+      for (int j = i + 1; j < primes.size(); j++) {
+        int sp = primes.get(i) * primes.get(j);
+        if (sp < 1000) {
+          semiprimes.add(sp);
+        }
+      }
+    }
+
+    for (int i : semiprimes) {
+      for (int j : semiprimes) {
+        sums.add(i + j);
+      }
+    }
+  }
+
+  @Override
+  public void solve(int testNumber) {
+    int n = in.nextInt();
+
+    out.println(sums.contains(n) ? "YES" : "NO");
+  }
+}