import sys
input = sys.stdin.readline

def gcd(a: int, b: int):
    """ https://cocodrips.hateblo.jp/entry/2014/03/05/143623
    """
    while b:
        a, b = b, a%b
    return a

def lcm(a: int, b: int):
    return a * b // gcd(a, b)


def main():
    #N, M = map(int, input().split())
    print("A xor B")
    
if __name__ == "__main__":
    main()