wshe2的专栏

I have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.The first line of the input contains an integer T(1<=T<=20) which means the number

Problem DescriptionGiven a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in this sequence is 6 + (-1) + 5 +

Problem DescriptionA number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 27, ... shows the first

Problem DescriptionContest time again! How excited it is to see balloons floating around. But to tell you a secret, the judges' favorite time is guessing the most popular problem. When the contest i

有一个由字符组成的方程式：WWWDOT-GOOGLE=DOTCOM 每一个字母代表一个不同的数字，不能以0开头。使用穷举法就是对每个字母用0~9的数字尝试10次，由于没一个字母代表不同的数字，如果考虑0开头的情况，这样的组合有10*9*8*7*6*5*4*3*2*1=3628800组合。数据结构的定义上，要避免固定9个字符的方法，就需要定义一可变化的字符元素列表，每个字符包含3个属性：

Description人生来就有三个生理周期，分别为体力、感情和智力周期，它们的周期长度为23天、28天和33天。每一个周期中有一天是高峰。在高峰这天，人会在相应的方面表现出色。例如，智力周期的高峰，人会思维敏捷，精力容易高度集中。因为三个周期的周长不同，所以通常三个周期的高峰不会落在同一天。对于每个人，我们想知道何时三个高峰落在同一天。对于每个周期，我们会给出从当前年份的第一天开始，到出现高