http://poj.org/problem?id=2392 题意: 有一群牛要上太空.他们计划建一个太空梯-----用一些石头垒.他们有K种不同类型的石头,每一种石头的高度为h_i,数量为c_i,并且由于会受到太空辐射,每一种石头不能超过这种石头的最大建造高度a_i.帮助这群牛建造一个最高的太空梯. 吐槽: 做练习的时候,连需不需要对数据排序都没分析清楚...下次再也不把练习安排在上午了,一般我上午状态极差(┬＿┬) 这题由于数据较水,可以直接把多重背包转化为01背包求解,当然由于设定的状态不…

Space Elevator   Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 8569   Accepted: 4052 Description The cows are going to space! They plan to achieve orbit by building a sort of space elevator: a giant tower of blocks. They have K (1 <= K…

Description The cows are going to space! They plan to achieve orbit by building a sort of space elevator: a giant tower of blocks. They have K ( <= K <= ) different types of blocks with which to build the tower. Each block of type i has height h_i (…

Q: 额外添加了最大高度限制, 需要根据 alt 对数据进行预处理么? A: 是的, 需要根据 alt 对数组排序 Description The cows are going to space! They plan to achieve orbit by building a sort of space elevator: a giant tower of blocks. They have K (1 <= K <= 400) different types of blocks with w…

题目:http://poj.org/problem?id=2392 一定要先按高度限制由小到大排序! 不然就相当于指定了一个累加的顺序,在顺序中是不能做到“只放后面的不放前面的”这一点的! 数组是四十万,不是四万. #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> using namespace std; ],l[],cnt,mx; ]; struct Node…

POJ 2392 Space Elevator(贪心+多重背包) http://poj.org/problem?id=2392 题意: 题意:给定n种积木.每种积木都有一个高度h[i],一个数量num[i].另一个限制条件,这个积木所在的位置不能高于limit[i],问能叠起的最大高度? 分析: 本题是一道多重背包问题, 只是每一个物品的选择不只要受该种物品的数量num[i]限制, 且该物品还受到limit[i]的限制. 这里有一个贪心的结论: 我们每次背包选取物品时都应该优先放置当前limit…

Space Elevator Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 9244   Accepted: 4388 Description The cows are going to space! They plan to achieve orbit by building a sort of space elevator: a giant tower of blocks. They have K (1 <= K <…

A - Space Elevator Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Description The cows are going to space! They plan to achieve orbit by building a sort of space elevator: a giant tower of blocks. They have…

Description The cows are going to space! They plan to achieve orbit by building a sort of space elevator: a giant tower of blocks. They have K (1 <= K <= 400) different types of blocks with which to build the tower. Each block of type i has height h…

悼念512汶川大地震遇难同胞——珍惜现在,感恩生活 HDU 2191 一道裸的多重背包问题: #include<iostream> #include<algorithm> #include<stdio.h> #include<string.h> using namespace std; ],a[],b[],c[]; int main() { int t,n,m; scanf("%d",&t); while(t--) { scanf…