额,直接思路就dp吧.(我还想了想最短路之类的233但事实证明不行2333.....) 直入主题: 化简题意:在x轴上有n个点,坐标为xi.从原点出发,目标点为e,在途中需要收集K重量的物品,在每个点有收集的上限和单价,路费是当前已收集重量*距离,求最小值. 首先,最暴力的方程式很好推(普及难度),枚举当前点,当前点总重量,nk^2的复杂度(25 0000 0000 233.....)于是直接gg. 所以,方程式: dp[i][j]=min(dp[i-][p]+dis[i] j^+w[i-] (…

题目描述 约翰开车来到镇上,他要带 KKK 吨饲料回家.运送饲料是需要花钱的,如果他的车上有 XXX 吨饲料,每公里就要花费 X2X^2X2 元,开车D公里就需要 D×X2D\times X^2D×X2 元.约翰可以从 NNN 家商店购买饲料,所有商店都在一个坐标轴上,第 iii 家店的位置是 XiX_iXi​ ,饲料的售价为每吨 CiC_iCi​ 元,库存为 FiF_iFi​ . 约翰从坐标 X=0X=0X=0 开始沿坐标轴正方向前进,他家在坐标 X=EX=EX=E 上.为了带 KKK 吨饲料…

题目链接 首先把商店按坐标排序 \(dp_{i,j}\)表示前i个商店买了j吨饲料并运到终点的花费,二进制拆分优化转移 #include<algorithm> #include<iostream> #include<cstring> #include<cstdio> #define int long long using namespace std; const int N=10010; int n,E,K,dp[N]; struct Data{ int x…

洛谷 P2616 [USACO10JAN]购买饲料II Buying Feed, II https://www.luogu.org/problemnew/show/P2616 题目描述 Farmer John needs to travel to town to pick up K (1 <= K <= 100) pounds of feed. Driving D miles with K pounds of feed in his truck costs D*K cents. The cou…

P2616 [USACO10JAN]购买饲料II Buying Feed, II 题目描述 Farmer John needs to travel to town to pick up K (1 <= K <= 100) pounds of feed. Driving D miles with K pounds of feed in his truck costs D*K cents. The county feed lot has N (1 <= N <= 100) stores…

题面 约翰开车来到镇上,他要带V吨饲料回家.如果他的车上有X吨饲料,每公里就要花费X^2元,开车D公里就需要D* X^2元.约翰可以从N家商店购买饲料,所有商店都在一个坐标轴上,第i家店的位置是Xi,饲料的售价为每吨Ci元,库存为Fi.n≤500,k≤10000. 输入格式 第1行:三个整数 V,E,N 第2..N+12..N+1行:第i+1行的三个整数代表Xi​,Fi​,Ci​ . 输出格式 一个整数,代表最小花费. 数据范围 1 ≤ V≤ 10000 , 1 ≤ E ≤ 500 , 1 ≤…

2020: [Usaco2010 Jan]Buying Feed, II Time Limit: 3 Sec  Memory Limit: 64 MBSubmit: 220  Solved: 162[Submit][Status] Description (buying.pas/buying.in/buying.out 128M 1S) Farmer John needs to travel to town to pick up K (1 <= K <= 100) pounds of feed…

洛谷 P2616 [USACO10JAN]购买饲料II Buying Feed, II 洛谷传送门 JDOJ 2671: USACO 2010 Jan Silver 2.Buying Feed, II JDOJ传送门 Description Farmer John needs to travel to town to pick up K (1 <= K <= 100) The county feed lot has N (1 <= N <= 100) stores (conveni…

P2729 饲料调配 Feed Ratios 36通过 103提交 题目提供者该用户不存在 标签USACO 难度普及/提高- 提交  讨论  题解 最新讨论 暂时没有讨论 题目背景 农夫约翰从来只用调配得最好的饲料来喂他的奶牛.饲料用三种原料调配成:大麦,燕麦和小麦.他知道自己的饲料精确的配比,在市场上是买不到这样的饲料的.他只好购买其他三种混合饲料(同样都由三种麦子组成),然后将它们混合,来调配他的完美饲料. 题目描述 给出三组整数,表示 大麦:燕麦:小麦 的比例,找出用这三种饲料调配 x:y…

Problem F: F BUYING FEED Description Farmer John needs to travel to town to pick up K (1 <= K <= 100)pounds of feed. Driving D miles with K pounds of feed in his truck costs D*K cents. The county feed lot has N (1 <= N <= 100) stores (convenie…