链接 Google Codejam 2016 Round1A Problem C BFFs 题意 n个小朋友要坐成一个圈.每个小朋友心中都有一个Best Friend Forever.要保证每个人的左右至少有一个是他的BFF,问最多能让多少人做成一个圈. 思路 n只有1000,每个点的出度也都是1.看上去就不需要套用某种算法.综合的考虑一下,如果有m个人的BFF关系正好形成一个环,那么他们就可以成为一种结果,并且这个环中不能有别的人插入了.另外一种情况就是一条链,在这条链中有至少两个点A和B的B…
Google IO大会倒计时进行中~~ 两名演奏者在使用高空“古筝”. 最后5秒倒计时~~~~全场轰动~ 倒计时结束,IO大会正式开始.屏幕中,一个人把纯白的唱片放入唱片机中. 然后欢快的音乐响起,台上一名DJ哥开始混音,屏幕开始放映唯美的动画.动画的内容简约而不简单,暗示了今年IO大会的内容,也展示了Google的所有服务.如果你细心,就会发现很多动画都是关于VR的~ 最后,两侧的动画渐变为“ I ”,唱片机变成 “ O ”. 大Boss, CEO Sundar登场,又是一阵啪啪啪. 他一登场…
[Problem Description] Problem On the game show The Last Word, the host begins a round by showing the contestant a string S of uppercase English letters. The contestant has a whiteboard which is initially blank. The host will then present the contesta…
Note: To advance to the next rounds, you will need to score 25 points. Solving just this problem will not give you enough points. Problem Recently you went to a magic show. You were very impressed by one of the tricks, so you decided to try to figure…