The Head Elder of the tropical island of Lagrishan has a problem. A burst of foreign aid money was spent on extra roads between villages some years ag ...
分类：
其他好文 时间：
2020-04-19 10:48:26
阅读次数：
73
题目描述 In a village called Byteville, there are houses connected with N-1 roads. For each pair of houses, there is a unique way to get from one to anoth ...
分类：
其他好文 时间：
2020-04-07 18:17:31
阅读次数：
69
题目描述 In a village called Byteville, there are $n$ houses connected with $n 1$ roads. For each pair of houses, there is a unique way to get from one to ...
分类：
其他好文 时间：
2020-04-07 00:16:06
阅读次数：
70
题目描述： # You live in the city of Cartesia where all roads are laid out in a perfect grid.# You arrived ten minutes too early to an appointment, so you ...
分类：
其他好文 时间：
2020-04-06 00:16:25
阅读次数：
94
欢迎回来，这里是做图论已经做到疯了的爱上了图论的Darth Victor。没错今天又是图论题，最近一直在刷图论。 题目 N cities named with numbers 1 ... N are connected with one-way roads. Each road has two pa ...
分类：
其他好文 时间：
2020-03-14 10:59:13
阅读次数：
51
【思路】 题目生词 figure n. 数字 v. 认为，认定；计算；是……重要部分 The stations are represented by vertices and the roads correspond to the edges. 顶点表示车站，边表示道路。 correspond to ...
分类：
其他好文 时间：
2020-02-16 13:22:29
阅读次数：
72
$\Large\textbf{Description:} \large{有一颗 n 个节点的树，k 次旅行，问每一条边被走过的次数。}$ $\Large\textbf{Solution:} \large{树上差分板子？？}$ $\Large\textbf{Code:}$ $\large\color{ ...
分类：
其他好文 时间：
2020-02-06 23:05:05
阅读次数：
89
Description Building and maintaining roads among communities in the far North is an expensive business. With this in mind, the roads are build such th ...
分类：
其他好文 时间：
2020-02-01 21:13:17
阅读次数：
94
题目链接：https://www.luogu.com.cn/problem/CF191C https://codeforces.com/problemset/problem/191/C 题意： 给你一棵树，然后给你m对点，将每对点之间的最短路径上每条边权值+1，求操作完成后每条边的权值。 方法： p ...
分类：
其他好文 时间：
2020-01-30 09:57:29
阅读次数：
75
#include<iostream> #include<cstring> #include<algorithm> using namespace std; const int N=110; int p[N]; struct edge{ int a; int b; int w; }e[N*N]; in ...
分类：
其他好文 时间：
2020-01-29 14:22:30
阅读次数：
62
