G-Howe的博客

http://codeforces.com/problemset/problem/1004/CSince Sonya is interested in robotics too, she decided to construct robots that will read and recognize numbers.Sonya has drawn nnumbers in a row, ...

http://codeforces.com/problemset/problem/1016/B在网上找了一个题解，感觉有点东西，用substr不断取出长度为m的子串，并记录下来，查询的时候直接枚举查询的区间。用substr的时候定义字符串要用string,输入字符串的时候要用cin，否则会出现错误，不知道为啥，还是记下吧You are given two strings s and t...

http://codeforces.com/problemset/problem/707/CKatya studies in a fifth grade. Recently her class studied right triangles and the Pythagorean theorem. It appeared, that there are triples of positive ...

解题思路：先找到第一个2出现之前0的个数并标记第一个二所在位置（0和2不能交换），找到字符串中所有1的个数（1可以和0,2交换），把找到的0和1按先后顺序输出，此时就剩下2和其后面的0了，再从第一个二的位置把2和0按顺序输出，此时就是所求的最小字符串（2越靠后越好）You are given a ternary string (it is a string which consists onl...

To stay woke and attentive during classes, Karen needs some coffee!Karen, a coffee aficionado, wants to know the optimal temperature for brewing the perfect cup of coffee. Indeed, she has spent so...

题挺简单的，就是看细心不细心，考虑的全不全，我就是少考虑个条件，一直错，必须记下来Today an outstanding event is going to happen in the forest — hedgehog Filya will come to his old fried Sonya!Sonya is an owl and she sleeps during the day...

题意大致为把 xxxx.xxxx看作一个整体，刚开始字符全为'.',看是否可以组成给出的图像。做法事用一个数组输入，另一个数组刚开始全赋为.........................................,当三行三列一周全为#时，把另一个数组相应位置上的点改为#，最后比较两个数组是否一模一样Student Andrey has been skipping ph...

https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=5307题解：先用等差和等比性质算出缺的一项值应为多少，然后先等差检测，检测是否为上升序列，每一项都要大于0小于1000000，如果不行标记，进行等比检测，检测是...

这道题关键是怎麽解决超时问题，通过找规律或者计算公式可以得到结果为:(n-1)*(2^n)+1。我是通过找2^1，2^10，2^100，……，2^1e18来解决的，看代码已知F(n)=n∑i=1(i×n∑j=iCij)求 F(n) mod 1000000007Input多组输入，每组输入占一行，包含一个整数n（1 <= n <= 1e18)。数据不超过3000...