from sys import stdin, stdout

input = lambda: stdin.readline()
write = stdout.write

def main():
    A, B = map(int, input().split())

    rnd = lambda x: (round(x, 5) * 2 + 1) // 2
    a = 1 if A else 0
    b = 1 if B else 0
    while 1:
        if A:
            a_ = rnd(a / (a + b) * 100)
            if a_ < A:
                a += 1
                continue
            elif a_ > A:
                b += 1
                continue
        if B:
            b_ = rnd(b / (a + b) * 100)
            if b_ < B:
                b += 1
                continue
            elif b_ > B:
                a += 1
                continue
        break
    print(a + b)

main()