简单dfs,差分一下A数组和建出字典树能写得更方便,若不这么做代码时就会像我一样难受. #include<cstdio> #include<cstring> #include<algorithm> using namespace std; typedef long long ll; const int N = 100003; int a[13][N], n, m, k, A[13], pos[13][N]; ll dfs(int tmp, int l, int r, i…

Problem G. Garden Gathering Input file: standard input Output file: standard output Time limit: 3 seconds Memory limit: 512 megabytes Many of you may have been to St. Petersburg, but have you visited Peterhof Palace? It is a collection of splendid pa…

Problem D. Delay Time Input file: standard input Output file: standard output Time limit: 1 second Memory limit: 512 megabytes Petr and Egor are measuring the gravitational acceleration g on their physics lessons using a special device. An electromag…

目录 2018-2019 ICPC, NEERC, Southern Subregional Contest (Codeforces 1070) A.Find a Number(BFS) C.Cloud Computing(线段树) D.Garbage Disposal(模拟) E.Getting Deals Done(二分) F.Debate(贪心) H.BerOS File Suggestion(后缀自动机) I.Privatization of Roads in Berland(网络流)…

2018-2019 ICPC, NEERC, Southern Subregional Contest 闲谈: 被操哥和男神带飞的一场ACM,第一把做了这么多题,荣幸成为7题队,虽然比赛的时候频频出锅,差点被鸽,但还算打完了5h 总的来说这场还是不算难的,7题还是少了点 A 题目: 给出a,b,求出一个数满足是a的倍数,且数字和为b 题解: 男神懒得写博客就甩锅了 直接宽搜,宽搜时队列中的状态保存为x,y,x表示当前的数%a==x,y表示数字和 然后记录状态和方案就行了 参考代码: #inclu…

2016 NEERC, Moscow Subregional Contest K. Knights of the Old Republic 题意:有一张图,第i个点被占领需要ai个兵,而每个兵传送至该点需要bi的费用.占领第i条边需要其两端点的兵数之和大等于ci.对于已占领的点或边可以免费通行.因此兵达到一个点的手段有传送和沿路走.图上的兵可以在已占领的点.边随意调度. 求占领所有点的最小花费. 思路:将边按ci进行升序排列,对于每条边两端点所在的连通块进行合并,合并细节见代码.这里有一点值得思…

从这里开始 题目列表 瞎扯 Problem A Find a Number Problem B Berkomnadzor Problem C Cloud Computing Problem D Garbage Disposal Problem E Getting Deals Done Problem F Debate Problem G Monsters and Potions Problem H BerOS File Suggestion Problem I Privatization of…

[链接] 我是链接,点我呀:) [题意] [题解] 我们可以很容易知道区间的每个位置有哪些安排可以用. 显然 我们优先用那些花费的钱比较少的租用cpu方案. 但一个方案可供租用的cpu有限. 我们可以用一个线段树 线段树的下标表示价格. 那一位的值,为这个价格的cpu能租多少个. 弄个区间和(即这个价格的区间总共能租多少个(最多) 再弄另外一个区间和sum表示价格区间内的所有cpu都租,要花多少钱. 因为每个位置最多要租k个cpu 利用上面的两个区间和则我们可以在线段树上做一个二分. 找到租前k…

K. King's Rout time limit per test 4 seconds memory limit per test 512 megabytes input standard input output standard output The great rout will be held this evening in the palace of his majesty Nassah II, the king of Occorom. There are n guests invi…

I. Illegal or Not? time limit per test 1 second memory limit per test 512 megabytes input standard input output standard output The Schengen Agreement was signed by a number of countries to uniform many visa-related questions and to allow tourists fr…