Problem E: Su-Su-Sudoku/center> 题目连接: http://codeforces.com/gym/100646/attachments Description By now, everyone has played Sudoku: you're given a 9-by-9 grid of boxes which you are to fill in with the digits 1 through 9 so that 1) every row has all n…

Problem C: LCR 题目连接: http://codeforces.com/gym/100646/attachments Description LCR is a simple game for three or more players. Each player starts with three chips and the object is to be the last person to have any chips. Starting with Player 1, each…

Problem A: Jolly Jumpers Time Limit: 1 Sec  Memory Limit: 64 MBSubmit: 10  Solved: 4[Submit][Status][Web Board] Description A sequence of n > 0 integers is called a jolly jumper if the absolute values of the differences between successive elements ta…

Problem L. Stock Trading Robot 题目连接: http://www.codeforces.com/gym/100253 Description CyberTrader is an all-in-one trading solution for investment banks, quantitative hedge funds and proprietary trading groups. It has only one drawback it is not impl…

Problem C: The Trip Time Limit: 1 Sec  Memory Limit: 64 MBSubmit: 19  Solved: 3[Submit][Status][Web Board] Description The Trip A group of students are members of a club that travels annually to different locations. Their destinations in the past hav…

Donald is a postman 题目链接: http://acm.hust.edu.cn/vjudge/contest/126546#problem/L Description Donald Duck works as a postman for the Walt Disney Studios. He delivers children's letters from all over the world to his friends, which are cartoon characte…

明确一下  一个字符串有x左括号不匹配  和 另一个字符串有x个右括号不匹配  这俩是一定能够匹配的 脑子有点迷 emm... 所以统计就好了  统计x个左括号的有几个,x个右括号的有几个 然后 乘一下 如果一个串 同时存在左右括号都不匹配的情况 则忽略 因为这个串需要另外两个括号去匹配 不要忘了处理左右括号已经匹配的情况 #include <bits/stdc++.h> using namespace std; , INF = 0x7fffffff; typedef long long LL…

http://www.lydsy.com/JudgeOnline/problem.php?id=1603 这种水题... dfs没话说.. #include <cstdio> #include <cstring> #include <cmath> #include <string> #include <iostream> #include <algorithm> using namespace std; #define rep(i,…

题目链接:https://codeforces.com/gym/102392/problem/F 题意:被这题题意坑了很久,大意是说有一棵根为 \(1\) 的树,每个节点初始都是白色, \(Alice\) 能在这棵树的某个节点放下一个棋子,并使得该节点变为黑色,然后从 \(Bob\) 开始,两人能轮流移动这个棋子到当前所在节点的任意一个白色的祖先或者后代节点(不需要相邻的节点),并且将移动到的节点染为黑色.谁先不能移动就输了. 分析:看到这道题,大致就是一个树上的博弈问题.我们一开始读错题意,以…

Problem G. Grave 题目连接: http://codeforces.com/gym/100531/attachments Description Gerard develops a Halloween computer game. The game is played on a rectangular graveyard with a rectangular chapel in it. During the game, the player places new rectangul…