import random
a=input("输入玩家请出拳：")
b=["石头","剪刀","布"]
if a in b:
    print("玩家出拳："+a)
    c=random.choice(b)
    print("计算机出拳："+c)
    if a==c:
        print("平局")
    elif (a=="石头"and c=="剪刀")or(a=="剪刀"and c=="布")or(a=="布"and c=="石头"):
        print("玩家赢!")
    else:
        print("计算机赢")
else:
    print("输入错误！")