[mayden]

אז תעשה:

if((x != 40) || ( x != 30) || ( x != 15) || ( x != 0) || ( x != 60) || (y != 40) || ( y != 30) || (y != 15) || ( y != 0) || (y != 60))
Console.WriteLine("Illegal..");
else {
Console.WriteLine(Math.Abs(x-y));