from sys import stdin, stdout

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

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

    rnd = lambda x: (x * 2 + 1) // 2
    a = 1 if A else 0
    b = 1 if B else 0
    while 1:
        flag1, flag2 = 0, 0
        n = a + b
        if A > 0:
            if rnd(a / n * 100) < A:
                a += 1
            else:
                flag1 = 1
        if B > 0:
            if rnd(b / n * 100) < B:
                b += 1
            else:
                flag2 = 1
        if flag1 and flag2:
            break
    print(a + b)

main()