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MUH and Important Things CodeForces - 471B It's time polar bears Menshykov and Uslada from the zoo of St. Petersburg and elephant Horace from the zoo 阅读全文
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George and Round CodeForces - 387B George decided to prepare a Codesecrof round, so he has prepared m problems for the round. Let's number the problem 阅读全文
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Arpa’s obvious problem and Mehrdad’s terrible solution CodeForces - 742B There are some beautiful girls in Arpa’s land as mentioned before. Once Arpa 阅读全文
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New Year Permutation CodeForces - 500B User ainta has a permutation p1, p2, ..., pn. As the New Year is coming, he wants to make his permutation as pr 阅读全文
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AT2364 Colorful Balls 题意翻译 N个球排成一排,第i个球有颜色ci和重量wi。 Snuke每次可以选择两个颜色相同,且重量之和不超过X的球,交换他们的位置。 Snuke每次可以选择两个颜色不同,且重量之和不超过Y的球,交换他们的位置。 问,可以得到多少种不同的颜色序列? 答案取 阅读全文
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SP5973 SELTEAM - Selecting Teams 【题目描述】 他已经有 n 个心仪的妹子了,但随着时间的流逝,只有 m(1<=m<=k)个直伴随在他的身边,而小小迪发现他只爱上了这其中的 l(1<=l<=m)个妹子从这 l 个中选出一个妹子作为他的真爱,向她告白。但小小迪并不知道未 阅读全文