from math import gcd
def UC(m, n):
    return gcd(m, n)
def BC(m, n):
    return (m *n )/UC(m, n)
def HuaHon(m, n):
    sm = 0
    sn = 0
    for i in range (1, m):
        if m % i == 0:
            sm += i
    for i in range (1, n):
        if n % i == 0:
            sn += i
    if max(sm, sn) - min(sn, sm) == 1:
        return True
    else:
        return False
m, n = int(input())
print("UCLN: ", UC(m, n))
print("BCNN: ", BC(m, n))
if HuaHon(m, n) == True:
    print("Yes")
else:
    print("No")