http://poj.org/problem?id=2393 Yogurt factory Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 7341   Accepted: 3757 Description The cows have purchased a yogurt factory that makes world-famous Yucky Yogurt. Over the next N (1 <= N <= 10…

Description The cows have purchased a yogurt factory that makes world-famous Yucky Yogurt. Over the next N (1 <= N <= 10,000) weeks, the price of milk and labor will fluctuate weekly such that it will cost the company C_i (1 <= C_i <= 5,000) c…

POJ 2393 题意: 每周可以生产牛奶,每周生产的价格为Ci,每周需要上交的牛奶量Yi,你可以选择本周生产牛奶,也可选择提前几周生产出存储在仓库中(仓库无限大,而且保质期不考虑),每一周存仓库牛奶需要花费S元,让你求出所有周的需求量上交的最少花费. 分析: 因为第 i 周的奶酪,可以在第 i 周生产,也可以在前几周生产,然后储存.通过把s转化为花费,跟原有花费去比较,取一个最小值,这样从头到尾,每一周都可以取得一个花费的最小值.贪心求解. #include<cstdio> #include…

题目:http://poj.org/problem?id=2393 题意:N周,每周生成牛奶(任意!),每周成本为c_i(1~5000),每周出货 y_i:出货可以使用该周生产的,也可以用之前的储存的牛奶,每周存储 每单位牛奶需要 S 价格.问,N周最小的成本是多少? 题解:贪心策略,维持每周 的最低单位成本,本周的单位成本 为 min(上周单位成本 + 存储S,本周成本) AC代码: #include <iostream> #include <cstdio> #include &…

奶牛们建了一家酸奶厂,在N周内每周需要出货Y_i单位酸奶,第i周成本为C_i,储存费为每周S.求总体最低成本. 贪心策略是维持每周的最低单位成本,每周可能用上周剩下的,也可能生产新的.于是该周单位成本可能为上一周的单位成本加上储存费,也可能为该周的单位成本. #pragma comment(linker, "/STACK:1024000000,1024000000") #include<iostream> #include<cstdio> #include<…

简单DP. 这周所用的实际花费是上一周的花费+S与这周费用的较小值. #include<cstdio> #include<cstring> #include<cmath> #include<queue> #include<algorithm> using namespace std; +; long long c[maxn]; long long y[maxn]; long long S; int n; int main() { while(~s…

2393:Yogurt factory 总时间限制:  1000ms 内存限制:  65536kB 描述 The cows have purchased a yogurt factory that makes world-famous Yucky Yogurt. Over the next N (1 <= N <= 10,000) weeks, the price of milk and labor will fluctuate weekly such that it will cost th…

Yogurt factory Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 8205   Accepted: 4197 Description The cows have purchased a yogurt factory that makes world-famous Yucky Yogurt. Over the next N (1 <= N <= 10,000) weeks, the price of milk…

1680: [Usaco2005 Mar]Yogurt factory Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 106  Solved: 74[Submit][Status][Discuss] Description The cows have purchased a yogurt factory that makes world-famous Yucky Yogurt. Over the next N (1 <= N <= 10,000)…

1740: [Usaco2005 mar]Yogurt factory 奶酪工厂 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 119  Solved: 100[Submit][Status][Discuss] Description The cows have purchased a yogurt factory that makes world-famous Yucky Yogurt. Over the next N (1 <= N <= 10…