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Description T. Chur teaches various groups of students at university U. Every U-student has a unique Student Identification Number (SIN). A SIN s is a 阅读全文
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Description Bessie is training for her next race by running on a path that includes hills so that she will be prepared for any terrain. She has planne 阅读全文
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Description The digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a single digit then that d 阅读全文
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Description The least common multiple (LCM) of a set of positive integers is the smallest positive integer which is divisible by all the numbers in th 阅读全文
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利用辗转相除法求 两数的最大公因数 或 最小公倍数 例如 求6497和3869的最大公因数和最小公倍数 6497÷3869=1……2628 3869÷2628=1……1241 2628÷1241=1……146 1241÷146=8……73 146÷73=2……0 则 最大公因数为 73 最小公倍数为 阅读全文
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Description HDU 2006'10 ACM contest的颁奖晚会隆重开始了！ 为了活跃气氛，组织者举行了一个别开生面、奖品丰厚的抽奖活动，这个活动的具体要求是这样的： 首先，所有参加晚会的人员都将一张写有自己名字的字条放入抽奖箱中； 然后，待所有字条加入完毕，每人从箱中取一个字条； 阅读全文