P2419 [USACO08JAN]牛大赛Cow Contest

传递闭包板子,震惊自己之前居然没学过,特此记录一下. #include <bits/stdc++.h> using namespace std; const int N = 110; int n, m, u, v, to[N][N]; int main () { cin >> n >> m; for (int i = 1; i <= m; ++i) { cin >> u >> v; to[u][v] = true; } for (int k

题目链接: Cow Contest 分析: 听说是一个Floyd求传递闭包 被拓扑的标签骗了进去 首先如果整个图不连通那么显然没办法确定,因为两个连通块之间的信息没有办法传递 所以先并查集判一下 然后考虑拓扑排序,一个点能得到确定的排名当且仅当它能被之前所有入过队的点到达 代码: #include<bits/stdc++.h> #define N (300 + 10) #define M (50000 + 10) using namespace std; inline int read() {

题目背景 [Usaco2008 Jan] 题目描述 N (1 ≤ N ≤ 100) cows, conveniently numbered 1..N, are participating in a programming contest. As we all know, some cows code better than others. Each cow has a certain constant skill rating that is unique among the competito

链接 Cow Contest Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%lld & %llu Description N (1 ≤ N ≤ 100) cows, conveniently numbered 1..N, are participating in a programming contest. As we all know, some cows code better than others. Eac

poj 3660 Cow Contest Description N (1 ≤ N ≤ 100) cows, conveniently numbered 1..N, are participating in a programming contest. As we all know, some cows code better than others. Each cow has a certain constant skill rating that is unique among the co

Cow Contest Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 16941   Accepted: 9447 题目链接:http://poj.org/problem?id=3660 Description: N (1 ≤ N ≤ 100) cows, conveniently numbered 1..N, are participating in a programming contest. As we all k

P3045 [USACO12FEB]牛券Cow Coupons 71通过 248提交 题目提供者洛谷OnlineJudge 标签USACO2012云端 难度提高+/省选- 时空限制1s / 128MB 提交  讨论  题解 最新讨论更多讨论 86分求救 题目描述 Farmer John needs new cows! There are N cows for sale (1 <= N <= 50,000), and FJ has to spend no more than his budget

P3014 [USACO11FEB]牛线Cow Line 题目背景 征求翻译.如果你能提供翻译或者题意简述,请直接发讨论,感谢你的贡献. 题目描述 The N (1 <= N <= 20) cows conveniently numbered 1...N are playing yet another one of their crazy games with Farmer John. The cows will arrange themselves in a line and ask Far

P3111 [USACO14DEC]牛慢跑Cow Jog_Sliver 题目描述 The cows are out exercising their hooves again! There are N cows jogging on an infinitely-long single-lane track (1 <= N <= 100,000). Each cow starts at a distinct position on the track, and some cows jog at