之所以在codeforces上找这100道水题的原因是为了巩固我对最近学的编程语言的掌握程度. 找的方式在codeforces上的PROBLEMSET中过的题最多的那些题里面出现的最前面的10个题型,它们是: math(数学) brute force(暴力) strings(字符串) implementation(模拟) greedy(贪心) sortings(排序) number theory(数论) constructive algorithm dp(动态规划) shortest path(…

CF546B Soldier and Badges 简单的贪心qwq 排个序,如果当前数与之前的数相重,已经用过,则加到一个之前没有用过的数 #include<cstdio> #include<algorithm> using namespace std; int n,ans,a[3005]; int main() { scanf("%d",&n); for (int i=0; i<n; i++) scanf("%d",&…

思路 是一道水题,可以用队列+模拟来写,注意不要拿完队列中的元素! 代码 #include<iostream> #include<cstdio> #include<queue> using namespace std; +; int main() { int n; cin>>n; queue<int>a;//队列 queue<int>b; int x,y; cin>>x; ;i<x;i++) { int x; cin…

这是bestcorder 67 div1 的1003 当时不会做 看了赛后官方题解,然后翻译了一下就过了,而且速度很快,膜拜官方题解.. 附上官方题解: the soldier of love 我们注意到我们求的是每一组至少覆盖一个点的线段数量. 那么我们可以先求一个点都没有覆盖的的线段数量,在用nn减去即可. 我们把所有点和线段先这样离线处理: 对于每个线段,在他的右端点处记上一个左端点的标记. 对于每组点,在除了第一个点之外的其他点上,记上一个前一个点的标记,同时记录下这个点的编号. 然后从…

题解参考网上的答案,以及我自己的想法. 主要参考网站:http://codeforces.com/blog/entry/47181,http://codeforces.com/blog/entry/47185.讲的都非常仔细,我建议看这个上面的题解,开拓思路,然后就是看排行榜上大神们的答案,当然可以直接看下面我的题解. 第一题 1.看懂题意很重要,如果理解了怎么计算,代码应该很快就写出来.maximum possible expected number,求最大期望个数,就是一个位置可以访问多次,…

题目链接: http://codeforces.com/problemset/problem/546/E E. Soldier and Traveling time limit per test1 secondmemory limit per test256 megabytes 问题描述 In the country there are n cities and m bidirectional roads between them. Each city has an army. Army of…

D. Soldier and Number Game Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/546/problem/D Description Two soldiers are playing a game. At the beginning first of them chooses a positive integer n and gives it to the second s…

C. Soldier and Cards Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/546/problem/C Description Two bored soldiers are playing card war. Their card deck consists of exactly n cards, numbered from 1 to n, all values are diff…

B. Soldier and Badges Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/546/problem/B Description Colonel has n badges. He wants to give one badge to every of his n soldiers. Each badge has a coolness factor, which shows how…

 目录: K Airdrop I Soldier Game L Sub-cycle Graph G Repair the Artwork ———————————————————— ps:楼主脑残有点严重,很容易写错别字和语言组织混乱,如果在读文章时遇到,可以在评论区里回复一下,我好改(花式骗评论) 补题地址:http://acm.zju.edu.cn/onlinejudge/showProblems.do?contestId=1&pageNumber=31 顺便好人做到底,给大家凑个11/13的…