Score : 100 points
You are given positive integers A and B.
If A is a divisor of B, print A + B; otherwise, print B - A.
Input is given from Standard Input in the following format:
A B
If A is a divisor of B, print A + B; otherwise, print B - A.
4 12
16
As 4 is a divisor of 12, 4 + 12 = 16 should be printed.
8 20
12
1 1
2
1 is a divisor of 1.