A, B = map(int, input().split())

if A == 0 or B == 0:
    print(1)

else:
    for a in range(1, 200):
        for b in range(1, 200):
            c = round(0.0001 + (100*a) / (a+b))
            d = round(0.0001 + (100*b) / (a+b))
            if A == c and B == d:
                print(a + b)
                exit()