def round_off(n):
    from math import modf,floor
    decimal,integer = modf(n)
    if decimal == 0.5:
        return floor(n) + 1
    elif decimal == 0:
        return floor(n)
    elif decimal > 0 and decimal < 0.5:
        return floor(n)
    elif decimal > 0.5 and decimal < 1:
        return floor(n) + 1
        
A,B = map(int,input().split())
k = 0
break_loop = False
for i in range(1,101):
    for j in range(i+1):
        if round_off(100*j/i) == A and round_off(100*(i-j)/i) == B:
            k = i
            break_loop = True
            break
        elif round_off(100*j/i) == B and round_off(100*(i-j)/i) == A:
            k = i
            break_loop = True
            break
    if break_loop:
        break
print(k)