import decimal
decimal.getcontext().prec = 10**15

def e(a, b):
    if a < b:
        return e(b,a)
    if (a % b) == 0:
        return b
    else:
        return e(b, a%b)

a, b = map(decimal.Decimal, input().split())
s = a + b
m = a * b
print(e(m,s))