two pointers *1200 No tag edit access C. Alternating Subsequence time limit per test 1 second memory limit per test 256 megabytes Recall that the sequencebbis a a subsequence of the sequenceaaifbbcan be derived fromaaby removing zero or more elements without changing the order of the remaining...
C. Even Path time limit per test 1 second memory limit per test 256 megabytes Pathfinding is a task of finding a route between two points. It often appears in many problems. For example, in a GPS navigation software where a driver can query for a suggested route, or in a robot motion...
Problem - 433C - Codeforces解题报告 对于这题本人刚开始的时候的想法是:先把最大两数差的位置找到然后merge计算一个值再与一连串相同的数做merge后计算一个值比较取最大值输出;可提交后发现不对,于是本人就搜了一下正解发现原来这题的正确解题思路是:采用数学中的中位数原理,分别把某数两边相邻且不同的数存...
Problem Link A. Almost Prime time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A. Almost P
题目链接:Problem - E - Codeforces 题意: t组数据,给定n个点、点u有颜色au的有根树,点1为该树的根,定义f(u,v)为u→v的路径上的颜色数目,u不是v祖先时无定义。对于所有点对(u,v),其中u不一定相异于v,设l为u,v的最近公共祖先,求maxf(l,u)⋅f(l...
Codeforces Beta Round #2 C. Commentator problem 模拟退火果然是一个非常高端的东西,思路神马的全然搞不懂啊~ 题目大意: 给出三个圆,求一点到这三个圆的两切线的夹角相等。 解题思路: 对于这个题来说还是有多种思路的 。只是都搞不明确~~ /害羞脸...
Repository files navigation README codeforces solutions Codeforces problem solutions My handle is : http://codeforces.com/profile/misra.ji Please do notify me @ joyneel.misra@students.iiit.ac.in for any queries or issues :)About codeforces problem solutions Resources Readme Activity Stars 2...
Codeforces gym/102956/problem/F 前oier,entp摩羯 2020-2021 Winter Petrozavodsk Camp, Belarusian SU Contest (XXI Open Cup, Grand Prix of Belarus) F. Border Similarity Undertaking 本来自己总结完不太想写的,但是想这道题过程一开始只想到了bitset的做法或者分治但是不太会合并那个玩意,还是记录一下。感谢...
你的算法需要优化。其实不需要去找出每对匹配的i j，只要找出数量就可以了。我给段简单的代码，你看看应该就明白了。include <stdio.h> double table[256];char str[100001];void main(){ char *p = str;int i;double n=0;gets(str);while(*p)table[*(p++)]+=1;for (int i = 1; i...
CodeForces - 527D Clique Problem (图,贪心) Description The clique problem is one of the most well-known NP-complete problems. Under some simplification it can be formulated as follows. Consider an undirected graph G. It is required to find a subset of vertices C of the maximum size such ...