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Codeforces

BFS(1) CDQ分治和整体二分(1) DFS(4) GDUT训练(8) KMP(1) MST(1) RMQ(2) Trie(1) 二分(3) 几何(2) 区间型DP(5) 单调栈(3) 容斥原理(2) 尺取(1) 差分(1) 广工新生赛题解(1) 序列型DP(1) 思维(1) 拓扑排序(1) 排序(3) 搜索(2) 数位DP(5) 数论(9) 无向图双连通分量(1) 最短路(8) 未归档(95) 杂(5) 栈/(优先)队列/链表(1) 树形DP(2) 树链剖分(2) 棋盘型DP(4) 概率/期望DP(3) 模拟退火(1) 物理(1) 状压型DP(9) 矩阵快速幂(2) 线性DP(4) 线段树/树状数组(8) 组合数学(1) 缩点(不仅SCC)(1) 网络流(4) 背包型DP(4) 莫队算法(2) 贪心(3) 题解(3)

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全部文章 / Codeforces （共15篇）

Codeforces402E Strictly Positive Matrix

http://codeforces.com/problemset/problem/402/E You have matrix a of size n × n. Let's number the rows of the matrix from 1 to n from top to bottom, l...

2019-03-17

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Codeforces404D Minesweeper 1D

http://codeforces.com/contest/404/problem/D Game "Minesweeper 1D" is played on a line of squares, the line's height is 1 square, the line's...

2019-03-17

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Codeforces405C. Unusual Product

http://codeforces.com/problemset/problem/405/C Little Chris is a huge fan of linear algebra. This time he has been given a homework about the unusual...

2019-03-17

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Codeforces405 B. Domino Effect

http://codeforces.com/problemset/problem/405/B 题意：给出n个骨牌倒的方向（左，右，不动），求最后保持直立的骨牌个数。思路：我是花了很大的功夫才搞好了这道题方法①：从左到右扫一遍，一个位置i最后直立，只有以下几种情况：（先找出i向左/右第一...

2019-03-17

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Codeforces1138B Circus

http://codeforces.com/contest/1138/problem/B Polycarp is a head of a circus troupe. There are nn — an even number — artists in the troupe. It is know...

2019-03-10

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