A. Again Twenty Five! time limit per test 0.5 seconds memory limit per test 64 megabytes input standard input output standard output The HR manager was disappointed again. The last applicant failed the interview the same way as 24 previous ones. "Do…

Problem - D1 - Codeforces 题意: 给n个符号(+或-), +代表+1, -代表-1, 求最少删去几个点, 使得     题解(仅此个人理解): 1. 这题打眼一看, 肯定和奇偶有关系, 奇数为+, 偶数为-, 但是删去点这一操作是动态的, 删去某点后, 后面的点的正负随之颠倒, 即奇数位+变偶数位-, 偶数位-变奇数位+, 恰好可以利用该特质 也就是说可以这样理解: 找到一个位置,删去该点并使得后面的点正负颠倒, 最后满足条件. 2. 对于奇数个数, 必须变成偶数个个数…

A. Tavas and Nafas Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/535/problem/A Description Today Tavas got his test result as an integer score and he wants to share it with his girlfriend, Nafas. His phone operating syste…

codeforces 535A-水题: #include <bits/stdc++.h> using namespace std; typedef long long LL; char s2[15][20]={"eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen",&q…

题目传送门 /* 很简单的水题,晚上累了,刷刷水题开心一下:) */ #include <bits/stdc++.h> using namespace std; ][] = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight",…

标题套用了路飞的格式,其实我想说的是大多数都不相信你的梦想,直到你快走到了. 不废话了,介绍一下twenty: 这是基于CMS框架 zerojs打造一个博客.zerojs 的架构介绍在这里http://www.cnblogs.com/sskyy/p/3918129.html. 相比其他博客系统wordpress.ghost等等.twenty有以下优势: 技术架构更好!是的,你没看错.twenty 前端用angular,后端用sailsjs(基于express).对开发者来说几乎没有学习成本.基于…

上一次我们拿学校的URP做了个小小的demo.... 其实我们还可以把每个学生的证件照爬下来做成一个证件照校花校草评比 另外也可以写一个物理实验自动选课... 但是出于多种原因,,还是绕开这些敏感话题.. 今天,我们来扒一下cf的题面! PS:本代码不是我原创 1. 必要的分析 1.1 页面的获取 一般情况CF的每一个 contest 是这样的: 对应的URL是:http://codeforces.com/contest/xxx 还有一个Complete problemset页面,它是这样的:…

http://codeforces.com/contest/738/problem/D Galya is playing one-dimensional Sea Battle on a 1 × n grid. In this game a ships are placed on the grid. Each of the ships consists of bconsecutive cells. No cell can be part of two ships, however, the shi…

http://codeforces.com/contest/738/problem/C Vasya is currently at a car rental service, and he wants to reach cinema. The film he has bought a ticket for starts in t minutes. There is a straight road of length s from the service to the cinema. Let's…

http://codeforces.com/contest/738/problem/A Polycarp has interviewed Oleg and has written the interview down without punctuation marks and spaces to save time. Thus, the interview is now a string s consisting of n lowercase English letters. There is…