提比的强行AC

1528. SequenceTime limit: 3.0 secondMemory limit: 64 MBYou are given a recurrent formula for a sequence f:f(n) = 1 + f(1)g(1) + f(2)g(2) + … + f(n−1)g(n−1),where g is also a

[1457] Sona时间限制: 5000 ms　内存限制: 65535 K问题描述Sona, Maven of the Strings. Of cause, she can play the zither.Sona can't speak but she can make fancy music. Her music can attack, heal,

2038: [2009国家集训队]小Z的袜子(hose)Time Limit: 20 Sec  Memory Limit: 259 MBSubmit: 3684  Solved: 1705[Submit][Status][Discuss]Description作为一个生活散漫的人，小Z每天早上都要耗费很久从一堆五颜六色的袜子中找出一双来穿。终于有一天，小Z再也无法忍受这恼人

货币兑换CashTime Limit: 5 Sec  Memory Limit: 64 MBSubmit: 2179  Solved: 974[Submit][Status][Discuss]DescriptionInput第一行两个正整数N、S，分别表示小Y 能预知的天数以及初始时拥有的钱数。 接下来N 行，第K 行三个实数AK、BK、RateK，意义如题目中

Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to attend as many parties as he can. Since it's Halloween, these parties are all costume parties, Gap

2-3 TreesTime Limit: 12000/6000MS (Java/Others)Memory Limit: 128000/64000KB (Java/Others)SubmitStatisticNext ProblemProblem Description      2-3 tree is an elegant data structure inv

筷子时间限制(普通/Java):1000MS/3000MS          运行内存限制:65536KByte总提交:187            测试通过:28描述A 先生有很多双筷子。确切的说应该是很多根，因为筷子的长度不一，很难判断出哪两根是一双的。这天，A 先生家里来了K 个客人，A 先生留下他们吃晚饭。加上A 先生，A夫人和他们的孩子小A，共K+3个人。每人需要

1737. Mnemonics and Palindromes 3Time limit: 1.0 secondMemory limit: 64 MBAs you remember, when Vasechkin was preparing a problem for the latest student contest, he spent a lot of time t

1800: [Ahoi2009]fly 飞行棋Time Limit: 10 Sec  Memory Limit: 64 MBSubmit: 760  Solved: 617[Submit][Status]Description给出圆周上的若干个点，已知点与点之间的弧长，其值均为正整数，并依圆周顺序排列。 请找出这些点中有没有可以围成矩形的，并希望在最短时间内找出所有不重复矩

2225: The number of stepsTime Limit: 1 Sec  Memory Limit: 128 MBSubmit: 25  Solved: 20[Submit][Status][Web Board]DescriptionMary stands in a strange maze, the maze looks like a triangle（

染色Time Limit: 20 Sec  Memory Limit: 512 MBSubmit: 3626  Solved: 1380[Submit][Status][Discuss]Description给定一棵有n个节点的无根树和m个操作，操作有2类：1、将节点a到节点b路径上所有点都染成颜色c；2、询问节点a到节点b路径上的颜色段数量（连