G - Petya and Graph 思路: 最大权闭合子图 对于每条边,如果它选了,那么它连的的两个点也要选 边权为正,点权为负,那么就是求最大权闭合子图 代码: #pragma GCC optimize(2) #pragma GCC optimize(3) #pragma GCC optimize(4) #include<bits/stdc++.h> using namespace std; #define fi first #define se second #define pi ac…
Petya has a simple graph (that is, a graph without loops or multiple edges) consisting of n n vertices and m m edges. The weight of the i i -th vertex is a i ai . The weight of the i i -th edge is w i wi . A subgraph of a graph is some set of the g…
原题地址:https://codeforces.com/contest/1082/problem/G G. Petya and Graph time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Petya has a simple graph (that is, a graph without loops or multiple e…
Petya and Graph http://codeforces.com/contest/1082/problem/G time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Petya has a simple graph (that is, a graph without loops or multiple edges) con…
title: NEERC 2016-2017 Probelm G. Game on Graph data: 2018-3-3 22:25:40 tags: 博弈论 with draw 拓扑排序 categories: 信息学竞赛 题目 description: 有一个有向图, 两人依次移动一个棋子, 谁不能移动谁输, 对于玩家二它如果不能赢宁愿选择输, 问先手为玩家一或二棋子初始在任意位置时先手输或赢或者是平局? --- NEERC 2016-2017 Probelm G. Game on Gr…
