Stall Reservations Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 4434   Accepted: 1588   Special Judge Description Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise time in…

Stall Reservations Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 11002   Accepted: 3886   Special Judge Description Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise time i…

Stall Reservations Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 4274   Accepted: 1530   Special Judge Description Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise time in…

Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise time interval A..B (1 <= A <= B <= 1,000,000), which includes both times A and B. Obviously, FJ must create a reservation system…

牛挤奶 题目大意:一群牛很挑剔,他们仅在一个时间段内挤奶,而且只能在一个棚里面挤,不能与其他牛共享地方,现在给你一群牛,问你如果要全部牛都挤奶,至少需要多少牛棚? 这一题如果把时间区间去掉,那就变成装箱子问题了(装箱子要用Splay维护),但是现在规定了区间和时间,我们只用贪婪算法就可以了,每次只用找到最小就可以了(用堆维护). PS:一开始我想到用AVL去维护,的都不知道我在想什么,简直浪费时间 #include <iostream> #include <functional>…

题意:一辆卡车距离重点L,现有油量P,卡车每前行1米耗费油量1,途中有一些加油站,问最少在几个加油站加油可使卡车到达终点或到达不了终点.   思路:运用优先队列,将能走到的加油站的油量加入优先队列中,油不够时加入优先队列中数值最大的油,如果油不够时队列里为空则到达不了.     #include<cstdio> #include<queue> #include<algorithm> using namespace std; priority_queue<int&g…

题目链接:http://www.lydsy.com/JudgeOnline/problem.php?id=1651 题意: 给你n个线段[a,b],问你这些线段重叠最多的地方有几层. 题解: 先将线段按左端点a升序排序. 开一个优先队列q(升序排序),里面存线段的右端点b. 枚举线段i,然后: (1)将q中所有小于a[i]的元素弹出. (2)插入b[i]. (3)更新ans = max(ans,q.size()) AC Code: #include <iostream> #include &l…

Stall Reservations Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise time interval A..B (1 <= A <= B <= 1,000,000), which includes both times A and B. Obviously, FJ must create a…

Stall Reservations 原文是English,这里直接上中文吧 Descriptions: 这里有N只 (1 <= N <= 50,000) 挑剔的奶牛! 他们如此挑剔以致于必须在[A,B ]的时间内产奶(1 <= A <= B <= 1,000,000)当然, FJ必须为他们创造一个决定挤奶时间的系统.当然,没有牛想与其他奶牛分享这一时光 帮助FJ做以下事: 使每只牛都有专属时间的最小牛棚数 每只牛在哪个牛棚 也许有很多可行解.输出一种即可,采用SPJ Inp…

POJ 3190 Stall Reservations贪心 Description Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise time interval A..B (1 <= A <= B <= 1,000,000), which includes both times A and B. Obvi…