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吉吉王国

题目描述：链接：https://ac.nowcoder.com/acm/problem/210473来源：牛客网吉吉王国有nn个城市，其中11号城市就是吉吉王国的首都，并且吉吉王国有n-1n−1条道路，每条道路都有一个长度dd，你可以从任意一点uu到达任意一点vv。但是最近吉吉***生了***，除...

2020-08-11

0 1250

NC24953-Cell Phone Network

NC24953*题目描述 *Farmer John has decided to give each of his cows a cell phone in hopes to encourage their social interaction. This, however, requires hi...

2020-08-09

0 707

polygon题解-区间DP

#include <iostream> #include <string.h> using namespace std; const int N=55; typedef long long LL; char ope[N<<1]; int dp[N<<1...

2020-07-16

1 569