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DescriptionFat brother and Maze are playing a kind of special (hentai) game on an N*M board (N rows, M columns). At the beginning, each grid of this b... 阅读全文
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DescriptionGerald got a very curious hexagon for his birthday. The boy found out that all the angles of the hexagon are equal to. Then he measured the... 阅读全文
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DescriptionDuring the early stages of the Manhattan Project, the dangers of the new radioctive materials were not widely known. Vast new factory citie... 阅读全文
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DescriptionIn the Fibonacci integer sequence,F0= 0,F1= 1, andFn=Fn− 1+Fn− 2forn≥ 2. For example, the first ten terms of the Fibonacci sequence are:0, ... 阅读全文
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Description大家常常感慨,要做好一件事情真的不容易,确实,失败比成功容易多了!做好“一件”事情尚且不易,若想永远成功而总从不失败,那更是难上加难了,就像花钱总是比挣钱容易的道理一样。话虽这样说,我还是要告诉大家,要想失败到一定程度也是不容易的。比如,我高中的时候,就有一个神奇的女生,在英语... 阅读全文
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DescriptionTomorrow is contest day, Are you all ready?We have been training for 45 days, and all guys must be tired.But , you are so lucky comparing w... 阅读全文
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DescriptionThe Sky is Sprite.The Birds is Fly in the Sky.The Wind is Wonderful.Blew Throw the TreesTrees are Shaking, Leaves are Falling.Lovers Walk p... 阅读全文
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N -概率Time Limit:4000MSMemory Limit:32768KB64bit IO Format:%lld & %lluSubmitStatusDescriptionAs Harry Potter series is over, Harry has no job. Since he... 阅读全文
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DescriptionSpeakless很早就想出国,现在他已经考完了所有需要的考试,准备了所有要准备的材料,于是,便需要去申请学校了。要申请国外的任何大学,你都要交纳一定的申请费用,这可是很惊人的。Speakless没有多少钱,总共只攒了n万美元。他将在m个学校中选择若干的(当然要在他的经济承受范... 阅读全文
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Description 小明对数的研究比较热爱,一谈到数,脑子里就涌现出好多数的问题,今天,小明想考考你对素数的认识。 问题是这样的:一个十进制数,如果是素数,而且它的各位数字和也是素数,则称之为“美素数”,如29,本身是素数,而且2+9 = 11也是素数,所以它是美素数。 给定一个区间,你能... 阅读全文