#打印水仙花数
num = int(input("请输入一个三位数（100~999）："))
baiwei = num//100
shiwei = (num - baiwei*100)//10
gewei = num - baiwei * 100 - shiwei * 10
if num == baiwei ** 3 + shiwei ** 3 + gewei ** 3:
    print("这是水仙花数！")
else:
    print("不是水仙花数！")