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摘要： When Valera has got some free time, he goes to the library to read some books. Today he's got t free minutes to read. That's why Valera took n books i 阅读全文

摘要： A TV show called "Guess a number!" is gathering popularity. The whole Berland, the old and the young, are watching the show. The rules are simple. The 阅读全文

摘要： Description 今天是校赛的日子，为了庆祝这么喜庆的日子，TMK打算买些礼物给女票LSH庆祝一下。 TMK进入了雪梨超市，然后刚踏入的一瞬间，店主就对TMK说：“恭喜你成为了本店第2147483647位顾客，本店在搞一个活动，对本店第2147483647位顾客进行赠送活动。你先看看你有多少钱 阅读全文

摘要： Farmer John is an astounding accounting wizard and has realized he might run out of money to run the farm. He has already calculated and recorded the 阅读全文

摘要： 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，同时XX星人对 Flycar的“舒适度”有特殊要求，即乘坐过程中最高速度与最低速度的差越小乘坐越舒服 阅读全文

摘要： As the new term comes, the Ignatius Train Station is very busy nowadays. A lot of student want to get back to school by train(because the trains in th 阅读全文

摘要： 某省调查乡村交通状况，得到的统计表中列出了任意两村庄间的距离。省政府“畅通工程”的目标是使全省任何两个村庄间都可以实现公路交通（但不一定有直接的公路相连，只要能间接通过公路可达即可），并要求铺设的公路总长度为最小。请计算最小的公路总长度。 Input测试输入包含若干测试用例。每个测试用例的第1行给出 阅读全文

摘要： Mr Wang wants some boys to help him with a project. Because the project is rather complex, the more boys come, the better it will be. Of course there 阅读全文

摘要： ice_cream's world is a rich country, it has many fertile lands. Today, the queen of ice_cream wants award land to diligent ACMers. So there are some w 阅读全文

摘要： A binary tree is a finite set of vertices that is either empty or consists of a root r and two disjoint binary trees called the left and right subtree 阅读全文