太空电梯 题目大意:一群牛想造电梯到太空,电梯都是由一个一个块组成的,每一种块不能超过这个类型的高度,且每一种块都有各自的高度,有固定数量,问最高能造多高. 这题就是1742的翻版,对ai排个序就可以了 (尼玛,我qsort排了n-1个数,wa半天不知所措) #include <iostream> #include <functional> #include <algorithm> using namespace std; typedef struct _set { i…

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…

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…

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…

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…

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…

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 <…

题目 1739: [Usaco2005 mar]Space Elevator 太空电梯 Time Limit: 5 Sec  Memory Limit: 64 MB 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) differe…

Building a Space Station POJ - 2031 You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task. The space station is ma…