CF76A.Gift 题意:noi2014魔法森林弱化版QwQ,最小化\(max(g_i)*G + max(s_i)*S\)的最小生成树 考虑按g升序加边,用已在生成树中的边和新加入的边求当前最小生成树. 复杂度\(O(nm)\) vector真好用 #include <iostream> #include <cstdio> #include <algorithm> #include <cstring> #include <vector> usi…

题目描述 有一个国家有N个城市和M条道路,这些道路可能连接相同的城市,也有可能两个城市之间有多条道路. 有一天,有一伙强盗占领了这个国家的所有的道路.他们要求国王献给他们礼物,进而根据礼物的多少而放弃占领某些边.对于每一条道路,强盗都给出了相应的要求,金子gi的数量,银子si的数量.也就是说若国王给强盗G个金子,S个银子,那么他们就会放弃占领满足gi<=G and si<=S 的道路. 现在国王知道金子.银子的单价,他想花费钱财购买金银送给强盗,使强盗放弃一些道路,进而使N个城市能互相到达.但…

Greedy Gift Givers A group of NP (2 ≤ NP ≤ 10) uniquely named friends has decided to exchange gifts of money. Each of these friends might or might not give some money to any or all of the other friends. Likewise, each friend might or might not receiv…

B. The Best Gift time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Emily's birthday is next week and Jack has decided to buy a present for her. He knows she loves books so he goes to the loc…

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Gift Hunting Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1418 Accepted Submission(s): 471 Problem Description After winning two coupons for the largest shopping mart in your city, you can't wa…

B. The Best Gift 题目连接: http://www.codeforces.com/contest/609/problem/B Description Emily's birthday is next week and Jack has decided to buy a present for her. He knows she loves books so he goes to the local bookshop, where there are n books on sale…

GTY's birthday gift                                                                       Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)                                                                            …

1328 - A Gift from the Setter   Problem setting is somewhat of a cruel task of throwing something at the contestants and having them scratch their head to derive a solution. In this problem, the setter is a bit kind and has decided to gift the contes…

 Greedy Gift Givers  The Problem This problem involves determining, for a group of gift-giving friends, how much more each person gives than they receive (and vice versa for those that view gift-giving with cynicism). In this problem each person sets…