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

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

for a in range(1,1000):
    for b in range(1,1000):
        if round(0.0001+100*a/(a+b)) == A and round(0.0001+100*b/(a+b)) == B:
            print(a+b)
            exit()