随笔分类 - OI
摘要：[OpenJudge 3063]罪犯问题 试题描述 一天，警官抓获了N个嫌犯，审问N个罪犯的途中，作为警长助手的你突然发现其中被确定为罪犯的K号人是你曾经出生入死的兄弟，你不能眼睁睁看着他被抓进牢里。 审问完了嫌犯之后，发现每个人都说话了，并且每个人只说了一句话，说的话形式有两种，“XXX是罪犯”以
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摘要：[OpenJudge 3061]Flip The Card 试题描述 There are N× Ncards, which form an N× Nmatrix. The cards can be placed upwards or downwards. Now Acer is going to d
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摘要：[POJ1050]To the Max 试题描述 Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1*1 or g
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摘要：[codeforces 509]C. Sums of Digits 试题描述 Vasya had a strictly increasing sequence of positive integers a1, ..., an. Vasya used it to build a new sequenc
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摘要：[codeforces 516]A. Drazil and Factorial 试题描述 Drazil is playing a math game with Varda. Let's define for positive integer x as a product of factorials
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摘要：[codeforces 260]B. Ancient Prophesy 试题描述 A recently found Ancient Prophesy is believed to contain the exact Apocalypse date. The prophesy is a string
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摘要：[codeforces 241]C. Mirror Box 试题描述 Mirror Box is a name of a popular game in the Iranian National Amusement Park (INAP). There is a wooden box, 105 cm
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摘要：[codeforces 241]A. Old Peykan 试题描述 There are n cities in the country where the Old Peykan lives. These cities are located on a straight line, we'll de
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摘要：[POJ1007]DNA Sorting 试题描述 One measure of ``unsortedness'' in a sequence is the number of pairs of entries that are out of order with respect to each o
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摘要：昨天忘记写了，因为急着去看 51nod 比赛，然而思考了许久还是一道都不会，好菜啊T_T。。。 补一下 Day 3 的情况。 Day 3 上午还是常规地做 vjudge 上的套题，硬着头皮啃英文，感觉我都要老眼昏花了。 第一题真是，又出博弈题，一到了这种题我就蒙了，根本不会思考，毕竟平时下棋打牌不多
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摘要：[codeforces 293]A. Weird Game 试题描述 Yaroslav, Andrey and Roman can play cubes for hours and hours. But the game is for three, so when Roman doesn't sho
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摘要：[codeforces 293]B. Distinct Paths 试题描述 You have a rectangular n × m-cell board. Some cells are already painted some of k colors. You need to paint eac
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摘要：[codeforces 235]A. LCM Challenge 试题描述 Some days ago, I learned the concept of LCM (least common multiple). I've played with it for several times and I
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摘要：[codeforces 325]B. Stadium and Games 试题描述 Daniel is organizing a football tournament. He has come up with the following tournament format: In the firs
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摘要：[POJ1062]昂贵的聘礼 试题描述 年轻的探险家来到了一个印第安部落里。在那里他和酋长的女儿相爱了，于是便向酋长去求亲。酋长要他用10000个金币作为聘礼才答应把女儿嫁给他。探险家拿不出这么多金币，便请求酋长降低要求。酋长说："嗯，如果你能够替我弄到大祭司的皮袄，我可以只要8000金币。如果你能
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摘要：[codeforces 528]B. Clique Problem 试题描述 The clique problem is one of the most well-known NP-complete problems. Under some simplification it can be form
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摘要：[codeforces 528]A. Glass Carving 试题描述 Leonid wants to become a glass carver (the person who creates beautiful artworks by cutting the glass). He alrea
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摘要：[codeforces 549]G. Happy Line 试题描述 Do you like summer? Residents of Berland do. They especially love eating ice cream in the hot summer. So this summe
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摘要：[POJ1003]Hangover 试题描述 How far can you make a stack of cards overhang a table? If you have one card, you can create a maximum overhang of half a card
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摘要：Day 2 7:26 2016/8/25 新的一天又开始了！ 走在上学的路上，抬头看看北京少有的蓝天，太阳的威力不再那么明显，甚至输给了挡住它的云朵。迎面吹来了凉爽的风，夏天的燥热，早已无影无踪。 许多新初一的小同学也在这时穿着军装，一个个在家长的陪同下走进校门，临别时还不忘给爸爸妈妈一个拥抱。今天
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