using System;

public class Program {
  // Pex for fun always selects the first comment line.
  public static void Puzzle(int i, int j) {
    if(OldVersion(i,j) != AltVersion(i,j)) throw new Exception();
  }

  public static int OldVersion(int x, int y) {
     return x + y;
  }

  public static int AltVersion(int x, int y) {
     if(x==10731 && y == -405571) {
        return 0;
    }
    return x + y;
  }
}