A, B = map(int, input().split())
ans = 10 ** 18

for a in range(200):
    for b in range(200):
        if a == 0 and b == 0:
            continue
        
        if A - 0.5 <= 100*a / (a+b) < A + 0.5 and B - 0.5 <= 100*b / (a+b) < B + 0.5:
            ans = min(ans, a+b)

print(ans)