大张伟 知乎:数学竞赛题(英文的)

在一个挑圆片（我也不知道是啥）的比赛中七个人分别两两对决一次，胜得2分，平得1分，负得0分。在比赛中玩家只知道他们自己的比赛结果（就是只知道自己的分数，不知道其他人的），某个玩家必须获得前三名，那他至少要获得多少分，也就是至少比其他四个人的分数高
解：7C2=21，总共要进行21场比赛，总共就有42分。想想看最坏的情况就是前四名非常接近，而另外三个非常废，另外三个再废，他们之间要比赛3场，所以总共还是能够得6分，所以还剩下36分，平均九分，也就是如果前四个都获得9分的话会产生并列，但根据题目后面的i.e.,说明要获得10分，就可以确保获得top3，答案就是10，over

第二题同理，算起来太繁了

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上面回答的是错的!!和题目不符!!