a, b = (int(i) for i in input().split())
print(a+b) if b%a == 0 else print(b-a) int(i) for i in input().split() for i in input().split() i input().split() ().split () input split for i in input().split() int(i) int i a, b = (int(i) for i in input().split()) a (int(i) for i in input().split()) b print(a+b) if b%a == 0 else print(b-a) b%a == 0 b%a b a 0 print(a+b) print a+b a b print(b-a) print b-a b a b = (int(i) for i in input().split()) (int(i) for i in input().split()) b a, b = (int(i) for i in input().split()) (int(i) for i in input().split()) a
a, b = (int(i) for i in input().split())
print(a+b) if b%a == 0 else print(b-a)