Problem B: Bulbs Greg has an m×n grid of Sweet Lightbulbs of Pure Coolness he would like to turn on. Initially, some of the bulbs are on and some are off. Greg can toggle some bulbs by shooting his laser at them. When he shoots his laser at a bulb, it…

A. Bulbs 题目连接: http://www.codeforces.com/contest/615/problem/A Description Vasya wants to turn on Christmas lights consisting of m bulbs. Initially, all bulbs are turned off. There are n buttons, each of them is connected to some set of bulbs. Vasya…

N*M bulbs 题目连接: http://codeforces.com/contest/510/problem/C Description NM个灯泡排成一片,也就是排成一个NM的矩形,有些开着,有些关着,为了节约用电,你要关上所有灯,但是你又很懒. 刚好有个熊孩纸路过,他刚好要从左上角的灯泡走去右下角的灯泡,然后离开. 但是毕竟熊孩纸,熊孩纸在离开一个灯泡之前,一定会动一下当前开关,也就是开的变关,关的变开. 想问你可不可能关完所有的灯,同时熊孩纸也可以到达右下角的灯泡,然后离开. Inp…

N bulbs Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 559    Accepted Submission(s): 298 Problem Description N bulbs are in a row from left to right,some are on, and some are off.The first bu…

N bulbs  Accepts: 408  Submissions: 1224  Time Limit: 10000/5000 MS (Java/Others)  Memory Limit: 65536/65536 K (Java/Others) Problem Description N bulbs are in a row from left to right,some are on, and some are off.The first bulb is the most left one…

Light Bulbs Time Limit: 2 Seconds      Memory Limit: 65536 KB Wildleopard had fallen in love with his girlfriend for 20 years. He wanted to end the long match for their love and get married this year. He bought a new house for his family and hired a…

MS    Memory Limit:65536KB    64bit IO Format:%lld & %llu SubmitStatusid=14946">Practiceid=14946">ZOJ 2976 Description Wildleopard had fallen in love with his girlfriend for 20 years. He wanted to end the long match for their love and…

求有限集传递闭包的 Floyd Warshall 算法(矩阵实现) 其实就三重循环.zzuoj 1199 题 链接 http://acm.zzu.edu.cn:8000/problem.php?id=1199 Problem B: 大小关系 Time Limit: 2 Sec  Memory Limit: 128 MBSubmit: 148  Solved: 31[Submit][Status][Web Board] Description 当我们知道一组大小关系之后,可判断所有关系是否都能成立…

Gson解析JSON字符串时出现了下面的错误: No-args constructor for class X does not exist. Register an InstanceCreator with Gson for this type to fix this problem. 解决的办法是把对应的Class改成静态类.…

C - NP-Hard Problem Crawling in process... Crawling failed Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 688C uDebug Description   Input   Output   Sample Input   Sample Output   Hint…