摘要：
Connections between cities Problem Description After World War X, a lot of cities have been seriously damaged, and we need to rebuild those cities. Ho 阅读全文
摘要：
KiKi's K-Number Problem Description For the k-th number, we all should be very familiar with it. Of course,to kiki it is also simple. Now Kiki meets a 阅读全文
摘要：
Game of Connections Problem Description This is a small but ancient game. You are supposed to write down the numbers 1, 2, 3, ... , 2n - 1, 2n consecu 阅读全文
摘要：
Entropy Problem Description An entropy encoder is a data encoding method that achieves lossless data compression by encoding a message with “wasted” o 阅读全文
摘要：
确定比赛名次 Problem Description 有N个比赛队（1<=N<=500），编号依次为1，2，3，。。。。，N进行比赛，比赛结束后，裁判委员会要将所有参赛队伍从前往后依次排名，但现在裁判委员会不能直接获得每个队的比赛成绩，只知道每场比赛的结果，即P1赢P2，用P1，P2表示，排名时P1 阅读全文
摘要：
What Are You Talking About Problem Description Ignatius is so lucky that he met a Martian yesterday. But he didn't know the language the Martians use. 阅读全文
摘要：
小兔的棋盘 Problem Description 小兔的叔叔从外面旅游回来给她带来了一个礼物，小兔高兴地跑回自己的房间，拆开一看是一个棋盘，小兔有所失望。不过没过几天发现了棋盘的好玩之处。从起点(0，0)走到终点(n,n)的最短路径数是C(2n,n),现在小兔又想如果不穿越对角线(但可接触对角线上 阅读全文
摘要：
How Many Answers Are Wrong Problem Description TT and FF are ... friends. Uh... very very good friends -________-bFF is a bad boy, he is always wooing 阅读全文
摘要：
Dragon Balls Problem Description Five hundred years later, the number of dragon balls will increase unexpectedly, so it\\\\\\\'s too difficult for Mon 阅读全文
摘要：
find the most comfortable road Problem Description XX星有许多城市，城市之间通过一种奇怪的高速公路SARS(Super Air Roam Structure 超级空中漫游结构）进行交流，每条SARS都对行驶在上面的Flycar限制了固定的Speed 阅读全文