x, y = map(int, input().split())

def f(x):
    return (x + 4) % 12

d = [x, y]
d.sort()

for i in range(2):
    d.append(f(d[i]))
d = list(set(d))

for i in range(len(d)):
    if not (d[i] in [x, y]):
        print(d[i])
        break