A. Inna and Choose Options time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There always is something to choose from! And now, instead of "Noughts and Crosses", Inna choose a very unusu…

A. Inna and Choose Options time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There always is something to choose from! And now, instead of "Noughts and Crosses", Inna choose a very unusu…

B. Inna and New Matrix of Candies time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Inna likes sweets and a game called the "Candy Matrix". Today, she came up with the new game "Can…

B. Inna and New Matrix of Candies time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Inna likes sweets and a game called the "Candy Matrix". Today, she came up with the new game "Can…

http://codeforces.com/contest/723/problem/C 题目是给出一个序列 a[i]表示第i个歌曲是第a[i]个人演唱,现在选出前m个人,记b[j]表示第j个人演唱歌曲的数量, 现在你可以改变a[]这个数组,使得前m个人的演唱歌曲的数量的最小值最大. 很明显对于前m个人,每个人唱了多少首是很容易统计出来的,只需要对<=m的人进行统计即可,不用统计>m的,这样的话数组只需开到2000即可. 对于后面的人,可以改变,优先改变前m个人中演唱歌曲最小的那个,这个可以用优…

A. Inna and Choose Options time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There always is something to choose from! And now, instead of "Noughts and Crosses", Inna choose a very unusu…

A. Inna and Choose Options time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There always is something to choose from! And now, instead of "Noughts and Crosses", Inna choose a very unusu…

Brain's Photos 题目链接: http://codeforces.com/contest/707/problem/A Description Small, but very brave, mouse Brain was not accepted to summer school of young villains. He was upset and decided to postpone his plans of taking over the world, but to becom…

A. Vasya and Football 题目连接: http://codeforces.com/contest/493/problem/A Description Vasya has started watching football games. He has learned that for some fouls the players receive yellow cards, and for some fouls they receive red cards. A player wh…

B. Inna and New Matrix of Candies time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Inna likes sweets and a game called the "Candy Matrix". Today, she came up with the new game "Can…

C. Inna and Candy Boxes   Inna loves sweets very much. She has n closed present boxes lines up in a row in front of her. Each of these boxes contains either a candy (Dima's work) or nothing (Sereja's work). Let's assume that the boxes are numbered fr…

D - Inna and Sequence 线段数维护区间有几个没有被删除的数,利用线段树的二分找第几个数在哪里,然后模拟更新就好啦. #include<bits/stdc++.h> #define fi first #define se second #define mk make_pair #define pii make_pair #define ll long long #define read(x) scanf("%d",&x) #define sread…

C. Efim and Strange Grade 题目连接: http://codeforces.com/contest/719/problem/C Description Efim just received his grade for the last test. He studies in a special school and his grade can be equal to any positive decimal fraction. First he got disappoin…

A. Vitya in the Countryside time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Every summer Vitya comes to visit his grandmother in the countryside. This summer, he got a huge wart. Every gran…

题目链接: http://codeforces.com/contest/670/problem/E 题解: 用STL的list和stack模拟的,没想到跑的还挺快. 代码: #include<iostream> #include<cstdio> #include<cstring> #include<map> #include<list> #include<stack> using namespace std; + ; const in…

B. Case of Fake Numbers Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/556/problem/B Description Andrewid the Android is a galaxy-famous detective. He is now investigating a case of frauds who make fake copies of the famou…

B. Ohana Cleans Up Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/554/problem/B Description Ohana Matsumae is trying to clean a room, which is divided up into an n by n grid of squares. Each square is initially either clea…

A. Kyoya and Photobooks Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/554/problem/A Description Kyoya Ootori is selling photobooks of the Ouran High School Host Club. He has 26 photos, labeled "a" to "z", a…

A. Whose sentence is it? Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/312/problem/A Description One day, liouzhou_101 got a chat record of Freda and Rainbow. Out of curiosity, he wanted to know which sentences were said…

A. Wilbur and Swimming Pool Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/596/problem/A Description After making bad dives into swimming pools, Wilbur wants to build a swimming pool in the shape of a rectangle in his back…

A. The Child and Toy Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/438/problem/A Description On Children's Day, the child got a toy from Delayyy as a present. However, the child is so naughty that he can't wait to destroy…

C. Duff and Weight Lifting Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/588/problem/C Description Recently, Duff has been practicing weight lifting. As a hard practice, Malek gave her a task. He gave her a sequence of wei…

B. Gerald is into Art Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/560/problem/B Description Gerald bought two very rare paintings at the Sotheby's auction and he now wants to hang them on the wall. For that he bought a…

A. Currency System in Geraldion Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/560/problem/A Description A magic island Geraldion, where Gerald lives, has its own currency system. It uses banknotes of several values. But t…

A. Kefa and First Steps Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/580/problem/A Description Kefa decided to make some money doing business on the Internet for exactly n days. He knows that on the i-th day (1 ≤ i ≤ n) h…

题目链接:http://codeforces.com/problemset/problem/450/A ---------------------------------------------------------------------------------------------------------------------------------------------------------- 欢迎光临天资小屋:http://user.qzone.qq.com/593830943…

A. Fake NP time limit per test:1 second memory limit per test:256 megabytes input:standard input output:standard output Tavak and Seyyed are good friends. Seyyed is very funny and he told Tavak to solve the following problem instead of longest-path.…

https://codeforces.com/contest/1061/problem/F 题意 假设存在一颗完全k叉树(n<=1e5),允许你进行最多(n*60)次询问,然后输出这棵树的根,每次询问,a,b,c三个点,会返回b是否在a,c之间的路径上 思路 粗略看了下询问次数,可以知道,你最多可以询问60对不同的点,每对点遍历n个点,可以知道n个点在不在这两个点的中间 一开始的思路是,随机找两个点,遍历所有点,然后记录在他们中间的点,在里面再找两个点,继续上述操作,知道剩下一个点,但是假设某一…

题目链接:http://codeforces.com/contest/832/problem/B B. Petya and Exam time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output It's hard times now. Today Petya needs to score 100 points on Informatics…

A. Vitya in the Countryside 题目连接: http://codeforces.com/contest/719/problem/A Description Every summer Vitya comes to visit his grandmother in the countryside. This summer, he got a huge wart. Every grandma knows that one should treat warts when the…