H. Hit! time limit per test 1.0 s memory limit per test 256 MB input standard input output standard output "Hit!" is a popular game in ancient Byteland. The very first version of the game is quite simple: each player picks up a stone and throws…

Space Golf 题目连接: http://codeforces.com/gym/100803/attachments Description You surely have never heard of this new planet surface exploration scheme, as it is being carried out in a project with utmost secrecy. The scheme is expected to cut costs of c…

Solitaire 题目连接: http://codeforces.com/gym/100231/ Description 给你一个8*8棋盘,里面有4个棋子,每个棋子可以做一下某个操作之一: 1.走向相邻的空格 2.迈过相邻的棋子 然后给你初始状态和结束状态,问你能否得到呢? Input 第一行给你4个初始状态棋子的坐标 第二行给你4个结束状态棋子的坐标 Output 输出能否从初始状态走到结束状态 Sample Input 4 4 4 5 5 4 6 5 2 4 3 3 3 6 4 6 Sa…

Design a hit counter which counts the number of hits received in the past 5 minutes. Each function accepts a timestamp parameter (in seconds granularity) and you may assume that calls are being made to the system in chronological order (ie, the times…

 Gym 101047M Removing coins in Kem Kadrãn Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output Andréh and his friend Andréas are board-game aficionados. They know many of their friend…

 Gym 101047K Training with Phuket's larvae Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output Thai cuisine is known for combining seasonings so that every dish has flavors that are…

Gym 101047E Escape from Ayutthaya Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u  Practice  Description standard input/output Ayutthaya was one of the first kingdoms in Thailand, spanning since its foundation in 1350 to…

 Gym 101047B  Renzo and the palindromic decoration Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output At the ruins of Wat Phra Si Sanphet (วดพระศรสรรเพชญ), one can find famous inscr…

Buffer cache hit ratio官方是这么解释的:“指示在缓冲区高速缓存中找到而不需要从磁盘中读取的页的百分比.” Buffer cache hit ratio被很多人当做判断内存的性能指标之一(我没说仅仅只看这个计数器的值,实际上我现在都不看这个值了), 也有不少给给出了具体的参数,诸如(OLTP)要大于95%,或者是大于98%之类的,我不知道给出具体参考值的人是不是真是地区测试过这个参数的值,是作为经验总结还是复制粘贴? 当我去服务器上观察这个值的时候,似乎发现一个规律, 不管服…

原题链接在这里:https://leetcode.com/problems/design-hit-counter/. 题目: Design a hit counter which counts the number of hits received in the past 5 minutes. Each function accepts a timestamp parameter (in seconds granularity) and you may assume that calls are…