http://codeforces.com/contest/330/problem/B这道题可以围着一个可以与任何一个城市建路的城市建设. #include <cstdio> #include <cstring> #include <algorithm> using namespace std; ][]; ]; int main() { int n,m,a,b; scanf("%d%d",&n,&m); memset(,sizeof(…

                                                                                                                                             Road Construction Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 11210   Accepted: 5572 Descrip…

Road Construction Time Limit:2000MS    Memory Limit:65536KB    64bit IO Format:%I64d & %I64u SubmitStatus Description It's almost summer time, and that means that it's almost summer construction time! This year, the good people who are in charge of t…

Road Construction Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 10141   Accepted: 5031 Description It's almost summer time, and that means that it's almost summer construction time! This year, the good people who are in charge of the r…

POJ 3177 Redundant Paths POJ 3352 Road Construction 题目链接 题意:两题一样的.一份代码能交.给定一个连通无向图,问加几条边能使得图变成一个双连通图 思路:先求双连通.缩点后.计算入度为1的个数,然后(个数 + 1) / 2 就是答案(这题因为是仅仅有一个连通块所以能够这么搞,假设有多个,就不能这样搞了) 代码: #include <cstdio> #include <cstring> #include <algorithm…

Road Construction Description It's almost summer time, and that means that it's almost summer construction time! This year, the good people who are in charge of the roads on the tropical island paradise of Remote Island would like to repair and upgra…

Road Construction Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 12532   Accepted: 6309 Description It's almost summer time, and that means that it's almost summer construction time! This year, the good people who are in charge of the r…

P3352 Road Construction 描述 这几乎是夏季,这意味着它几乎是夏季施工时间!今年,负责岛屿热带岛屿天堂道路的优秀人士,希望修复和升级岛上各个旅游景点之间的各种道路. 道路本身也很有趣.由于岛上奇特的风俗习惯,道路的布置使得它们不会在十字路口相遇,而是通过桥梁和隧道在彼此之间穿过或穿过.这样,每条道路都在两个特定的旅游景点之间运行,这样游客不会失去不可挽回的收入. 不幸的是,鉴于每条道路上所需的维修和升级的性质,当建筑公司在特定的道路上工作时,它在任何方向都不可用.如果不能在…

[POJ3352]Road Construction 试题描述 It's almost summer time, and that means that it's almost summer construction time! This year, the good people who are in charge of the roads on the tropical island paradise of Remote Island would like to repair and upg…

Road Construction 本来不想做这个题,下午总结的时候发现自己花了一周的时间学连通图却连什么是边双连通不清楚,于是百度了一下相关内容,原来就是一个点到另一个至少有两条不同的路. 题意:给你一副图,求最少需要加几条边使其变为边双连通图. 思路:kuangbin模板上有介绍,这里就不详细说明了.具体做法是tarjan缩点后求度为1(2)的数量ans,答案就是(ans+1)/2. const int N=1e5+5; struct edge { int to,next,f; } e[N*…