题目链接:https://vjudge.net/problem/ZOJ-3469 Food Delivery Time Limit: 2 Seconds      Memory Limit: 65536 KB When we are focusing on solving problems, we usually prefer to stay in front of computers rather than go out for lunch. At this time, we may call…

Food Delivery ZOJ - 3469 题意:外卖送饭给N个顾客,要求他们不满度和最小,没人不满度=等待时间*耐心值 #include<cstring> #include<cstdio> #include<algorithm> using namespace std; #define maxn 1010 ],sum[maxn]; struct node{ int x,b; }a[maxn]; int cmp(node u,node v){ return u.x…

题意:有一家快餐店送外卖,现在同时有n个家庭打进电话订购,送货员得以V-1的速度一家一家的运送,但是每一个家庭都有一个不开心的值,每分钟都会增加一倍,值达到一定程度,该家庭将不会再订购外卖了,现在为了以后有更多的家庭订购,要将外卖送到的情况下使得所有用户的不开心值总和达到最小 思路:区间DP dp[i][j][0] :表示i到j这段区间内的最小值且留在i点 dp[i][j][1]:表示i到j这段区间内的最小值且留在j点 那么转移方程就是 sum[i]表示1到i的累加和,在枚举i到j的时候(0,i…

在刷ZeroClock大神的区间DP专辑,遇见了ZOJ3469,完全不无从下手,然后有人说是论问题,推荐看徐源盛<对一类动态规划问题的研究>这篇论文,果断得膜拜了下,感觉好神奇,可以把未来的费用提前计算好~~~顺便把相关的三道题A了,其实都是一样的... BZOJ2037 [Sdoi2008]Sue的小球 题目大意 中文的... 题解 这是论文的例题 直接上原文的讲解吧... 把dp数组初始化为0x7fffffffWA了,改成0x3f3f3f3f就AC了... 代码: #include <…

一.数位DP 1.含有或不含某个数“xx”: HDU3555 Bomb HDU2089 不要62 2.满足某些条件,如能整除某个数,或者数位上保持某种特性: HDU3652 B-number CodeForces - 55D Beautiful numbers POJ3252 Round Numbers HDU3709 Balanced Number 二.区间DP: 1.由小区间往左右两边扩散: POJ3186 Treats for the Cows ZOJ3469 Food Delivery…

What is "Deployment pipeline"? A deployment pipeline is an automated implementation of your application's build,deploy,test and release process. Typically a deployment pipeline includes: Commit stage(Compile/Unit test/Analysis/Build installers)…

Time Limit: 2 Seconds      Memory Limit: 65536 KB When we are focusing on solving problems, we usually prefer to stay in front of computers rather than go out for lunch. At this time, we may call for food delivery. Suppose there are N people living i…

Event Delivery: The Responder Chain  事件分发--响应链 When you design your app, it’s likely that you want to respond to events dynamically. For example, a touch can occur in many different objects onscreen, and you have to decide which object you want to re…

Coding Standards & Best Practices 7 Reasons to use a Content Delivery Network CDN公共库汇总…

题目链接: D. Delivery Bears time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Niwel is a little golden bear. As everyone knows, bears live in forests, but Niwel got tired of seeing all the trees…