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Do you know what is called ``Coprime Sequence''? That is a sequence consists of nnpositive integers, and the GCD (Greatest Common Divisor) of them is 阅读全文
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HDU - 1702 ACboy was kidnapped!! he miss his mother very much and is very scare now.You can't image how dark the room he was put into is, so poor :(. 阅读全文
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1001Apple Problem Description Apple is Taotao's favourite fruit. In his backyard, there are three apple trees with coordinates (x1,y1), (x2,y2), and ( 阅读全文
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题目描述 鸡国中的母鸡最擅长下蛋了,MGMG 是鸡国中一只以下蛋产量高而闻名全鸡国的母鸡。 鸡国专供下蛋的 n 个鸡窝呈一字排列在鸡国的“下蛋中心”,从左到右依次编号为 1 到n。每个鸡窝都有一个最大可下蛋的量,其中第 i 个鸡窝的最大可下蛋量为 ci 。有时候由于MGMG 产量实在太大而无法在一个 阅读全文