def equal(p, q, x):
    return q * (2 * x - 1) <= 2 * p < q * (2 * x + 1)

A, B = map(int, input().split())
ans = (999999, 999999)
for a in range(1000):
    for b in range(1000):
        s = a + b
        if s == 0:
            continue
        if equal(100 * a, s, A) and equal(100 * b, s, B) and a + b < sum(ans):
            ans = (a, b)

print(sum(ans))