04 2017 档案
摘要：A prime number p≥2 is an integer which is evenly divisible by only two integers: 1 and p. A composite integer is one which is not prime. The fundament
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摘要：InputThe first line of input consists of an integers T where 1≤T≤1000, the number of test cases. Then follow T lines, each containing four integers a,
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摘要：Freddy practices various kinds of alternative medicine, such as homeopathy. This practice is based on the belief that successively diluting some subst
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摘要：The factorial function, n! is defined thus for n a non-negative integer: 0! = 1 n! = n * (n-1)! (n > 0) We say that a divides b if there exists an int
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摘要：Input The first line of input contains one integer, giving the number of operations to perform.Then follow the operations, one per line, each of the f
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摘要：You start with a sequence of consecutive integers. You want to group them into sets. You are given the interval, and an integer P. Initially, each num
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摘要：Given a sequence of positive integers, count all contiguous subsequences (sometimes called substrings, in contrast to subsequences, which may leave ou
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摘要：The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-digit room
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摘要：题目意思就是已知n的阶乘，求n。 当输入的阶乘小于10位数的时候，我们可以用long long将字符串转化成数字，直接计算。 而当输入的阶乘很大的时候，我们就可以利用位数去大概的估计n。
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摘要：We say that x is a perfect square if, for some integer b, x = b2. Similarly, x is a perfect cube if, for some integer b, x = b3. More generally, x is
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摘要：In the game of chess, the queen is a powerful piece. It can attack by moving any number of spaces in its current row, in its column or diagonally. In
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摘要：题目1 : 智力竞赛 时间限制:5000ms 单点时限:1000ms 内存限制:256MB 描述 小Hi、小Ho还有被小Hi强拉来的小Z，准备组队参加一个智力竞赛。竞赛采用过关制，共计N个关卡。在第i个关卡中，小Hi他们需要获得Ai点分数才能够进入下一关。每一关的分数都是独立计算的，即使在一关当中获
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摘要：题目1 : 机会渺茫 时间限制:5000ms 单点时限:1000ms 内存限制:256MB 描述 小Hi最近在追求一名学数学的女生小Z。小Z其实是想拒绝他的，但是找不到好的说辞，于是提出了这样的要求：对于给定的两个正整数N和M，小Hi随机选取一个N的约数N'，小Z随机选取一个M的约数M'，如果N'和
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