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Your non-profit organization (iCORE - international Confederation of Revolver Enthusiasts) coordinates a very successful foreign student exchange prog 阅读全文
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Description The figure shown on the left is left-right symmetric as it is possible to fold the sheet of paper along a vertical line, drawn as a dashed 阅读全文
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十进制-十六进制 Time Limit: 1 Sec Memory Limit: 128 MB Description 把十进制整数转换为十六进制，格式为0x开头，10~15由大写字母A~F表示。 Input 每行一个整数x，0<= x <= 2^31。 Output 每行输出对应的八位十六进制整数 阅读全文
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UVA11877 The Coco-Cola Store Once upon a time, there is a special coco-cola store. If you return three empty bottles to the shop, you’ll get a full bo 阅读全文
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The Unsolvable Problem Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description There are many unsolvable 阅读全文
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1021: 组合数末尾的零 Description 从m个不同元素中取出n (n ≤ m)个元素的所有组合的个数，叫做从m个不同元素中取出n个元素的组合数。组合数的计算公式如下: C(m, n) = m!/((m - n)!n!) 现在请问，如果将组合数C(m, n)写成二进制数，请问转这个二进制数 阅读全文