import sys

def debug(x, table):
    for name, val in table.items():
        if x is val:
            print('DEBUG:{} -> {}'.format(name, val), file=sys.stderr)
            return None

def solve():
    A, B = map(int, input().split())

    if A == 0 or B == 0:
        print(1)
        return
    
    ans = A + B

    for a in range(1, A + 1):
        for b in range(1, B + 1):
            if calc_per(a, b) == (A, B):
                ans = min(ans, a + b)

    print(ans)

def calc_per(a, b):
    return myround(100*a/(a+b)), myround(100*b/(a+b))

def myround(x):
    return int((2*x + 1)//2)

if __name__ == '__main__':
    solve()