1  long int a = 100000;
       2  long int b = 21475;
       3  
       4  long
       5  f ()
       6  {
       7    return ((long long) a * (long long) b) >> 16;
       8  }
       9  
      10  main ()
      11  {
      12    if (f () < 0)
      13      abort ();
      14    exit (0);
      15  }