#Python program to sum of three given integers. However, if two values are equal sum will be zero.
def sum(x,y,z):
    if x == y or y == z or x ==z:
        sum = 0 
    else:
	sum = x + y + z 

    return sum 
print(sum(2,1,2))
print(sum(3,2,2))
print(sum(2,2,2))
print(sum(1,2,3))
