The Cats' Feeding Spots Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://hihocoder.com/contest/acmicpc2015beijingonline/problem/1 Description In Yan Yuan, the Peking University campus, there are many homeless cats. They all live happy lives because…
The Cats' Feeding Spots 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 In Yan Yuan, the Peking University campus, there are many homeless cats. They all live happy lives because students founded a Cat Association to take care of them. Students not only feed t…
在前面的几篇关于Free编程的讨论示范中我们均使用了基础类型的运算结果.但在实际应用中因为需要考虑运算中出现异常的情况,常常会需要到更高阶复杂的运算结果类型如Option.Xor等.因为Monad无法实现组合(monad do not compose),我们如何在for-comprehension中组合这些运算呢?假如在我们上一篇讨论里的示范DSL是这样的: trait Login[+A] case class Authenticate(uid: String, pwd: String) ext…
Training little cats Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 9613 Accepted: 2296 Description Facer's pet cat just gave birth to a brood of little cats. Having considered the health of those lovely cats, Facer decides to make th…
Zxr960115 is owner of a large farm. He feeds m cute cats and employs p feeders. There's a straight road across the farm and n hills along the road, numbered from 1 to n from left to right. The distance between hill i and (i - 1) is di meters. The fee…