题目的描述很长,其实描述的问题很简单,说有n的商品,它们每个的价值是pi,但是呢,再过di天这些商品就不能卖了(有可能过期了...),现在给出来每个商品的价值和可以卖的最后期限,问可以得到最多多少资金. 翻译出来这道题目后首先想到的就是线段树,因为线段树可以很好的处理在di天前面还剩多少天,然后找出来距离di最近的,不过这既然是并查集专题,就不得不使用并查集方法,想了很长时间终于想到,如果第di天被占有了那么让di的父节点保存他的前一个节点,然后使用的时候只要查找到一个等于本身的节点就好了,如果…

A supermarket has a set Prod of products on sale. It earns a profit px for each product x∈Prod sold by a deadline dx that is measured as an integral number of time units starting from the moment the sale begins. Each product takes precisely one unit…

A : Wireless Network  POJ - 2236 题意:并查集,可以有查询和修复操作 题解:并查集 #include<iostream> #include<cstdio> #include<cstring> #include<string> #include<algorithm> using namespace std; #define N 1110 int d; bool use[N]; struct node { int pr…

并查集的介绍可以看下https://www.cnblogs.com/jkzr/p/10290488.html A - Wireless Network POJ - 2236 An earthquake takes place in Southeast Asia. The ACM (Asia Cooperated Medical team) have set up a wireless network with the lap computers, but an unexpected afters…

这一节主要介绍segues,static table view cells 和 Add Player screen 以及 a game picker screen. Introducing Segues 开启 Main.storyboard拖拉一个Bar Button Item到Players窗口导航栏的右侧.在Attributes inspector中改变Identifier为Add,就会出现一个+号button.…

​<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="position: absolute; width: 0; height: 0"> <symbol xmlns="http://www.w3.org/2000/svg" class="icon" viewBox…

题目链接:https://cn.vjudge.net/problem/POJ-1456 此题与HDU-1789完全是一道题 题意 有N件商品,分别给出商品的价值和销售的最后期限,只要在最后日期之前销售处,就能得到相应的利润,并且销售该商品需要1天时间. 问销售的最大利润. 思路 详见HDU-1789 代码 注意题中n可为0 #include <cstdio> #include <algorithm> using namespace std; struct Product{ int…

欢迎访问~原文出处——博客园-zhouzhendong 去博客园看该题解 题目传送门 - POJ1456 题意概括  一家超市,要卖出N种物品(每种物品各一个),每种物品都有一个卖出截止日期Di(在该日期之前卖出可以获得收益,否则就无法卖出),且每种物品被卖出都有一个收益值Pi. 卖出每个物品需要耗时1天,且任一时刻只能卖出一个物品.给出这N种物品的Di和Pi,求最大收益值. 题解 堆的做法大概是第一感,闭着眼睛应该都可以想到. 堆的做法:倒着来,对于每一天,如果有产品在当天结束销售,那么把他们…

Supermarket Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 10725 Accepted: 4688 Description A supermarket has a set Prod of products on sale. It earns a profit px for each product x∈Prod sold by a deadline dx that is measured as an integr…

Supermarket Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 14656   Accepted: 6656 Description A supermarket has a set Prod of products on sale. It earns a profit px for each product x∈Prod sold by a deadline dx that is measured as an in…