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Array and Operations CodeForces - 498C You have written on a piece of paper an array of n positive integers a[1], a[2], ..., a[n] and m good pairs of 阅读全文
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Spit Problem CodeForces - 29A In a Berland's zoo there is an enclosure with camels. It is known that camels like to spit. Bob watched these interestin 阅读全文
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Clique Problem CodeForces - 527D 所谓图的极大团是指在一个无向图中找到最多的点，使得这些点构成的图（即导出子图）是一个完全图，然而这个问题至今没有有效的多项式解法，当然在某些特殊条件下，这个问题具备多项式解法。 我们给出数轴上n个互不相同的点，对于每个点i(1<=i< 阅读全文
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Blackjack CodeForces - 104A Tensor特别喜欢玩扑克，还总是爱发明一些关于扑克牌的游戏，有天他突然脑洞大开想到了这样的一个游戏： 现在有一副52张的扑克牌（没有大小王），规定每一张牌都有他自己的values，2～10点数分别对应2～10的values，QJK代表的val 阅读全文
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Lottery CodeForces - 589I Today Berland holds a lottery with a prize — a huge sum of money! There are kpersons, who attend the lottery. Each of them w 阅读全文
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Bits CodeForces - 484A Let's denote as the number of bits set ('1' bits) in the binary representation of the non-negative integer x. You are given mul 阅读全文
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Equivalent Strings CodeForces - 559B Today on a lecture about strings Gerald learned a new definition of string equivalency. Two strings a and b of eq 阅读全文
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Removing Columns CodeForces - 496C You are given an n × m rectangular table consisting of lower case English letters. In one operation you can complet 阅读全文
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Covered Path CodeForces - 534B The on-board computer on Polycarp's car measured that the car speed at the beginning of some section of the path equals 阅读全文
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牛客小白月赛13 闲的蛋疼打了一场小白，然后被爆踩。。。 J题好难啊，要学了莫反才能做，先留坑吧 先放一发官方题解 小A的签到题 链接：https://ac.nowcoder.com/acm/contest/549/A来源：牛客网 题目描述 这是一道签到题，主要考验比赛时的手速。 接下来是一段很简单 阅读全文