4Hetmanow

class CzterechHetmanow1
{
  static int a,b,c,d; // rozkład hetmanów na szachownicy

  public static void main(String[] args)
  {
    ustaw();
    int i;
    for (i = 0; i < 4; i++)
      System.out.print(i == a ? "X" : "O");
    System.out.println();
    for (i = 0; i < 4; i++)
      System.out.print(i == b ? "X" : "O");
    System.out.println();
    for (i = 0; i < 4; i++)
      System.out.print(i == c ? "X" : "O");
    System.out.println();
    for (i = 0; i < 4; i++)
      System.out.print(i == d ? "X" : "O");
    System.out.println();
  }

  static void ustaw()
  {
    for (a = 0; a < 4; a++)
      for (b = 0; b < 4; b++)
      {
        if (a == b || a == b-1 || a == b+1) continue;
        for (c = 0; c < 4; c++)
        {
          if (b == c || b == c-1 || b == c+1 ||
              a == c || a == c-2 || a == c+2) continue;
          for (d = 0; d < 4; d++)
          {
            if (c == d || c == d-1 || c == d+1 ||
                b == d || b == d-2 || b == d+2 ||
                a == d || a == d-3 || a == d+3) continue;
            return;
          }
        }
      }
  }
}