题目链接 http://codeforces.com/problemset/problem/597/B 题意 输入:区间数目n.及n个区间的起止(左闭右闭). 输出:最多不重叠的区间有多少个. 思路 贪心,最早结束优先. 其他 1 贪心就要彻底一点,多余的处理通常没用. 2 此题还涉及sort排序. 代码 #include<math.h> #include<stdio.h> #include<vector> #include<algorithm> using…

B. Restaurant Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/597/problem/B Description A restaurant received n orders for the rental. Each rental order reserve the restaurant for a continuous period of time, the i-th order…

题目链接 Restaurant 题目意思就是在$n$个区间内选出尽可能多的区间,使得这些区间互不相交. 我们先对这$n$个区间去重. 假如有两个区间$[l1, r1],[l2, r2]$ 若满足$l1 >= l2$且 $r1 <= r2$,那么$[l2, r2]$就是可以被去掉的. 因为这两个区间里我们显然最多只能选择一个. 如果我们在答案里选择了$[l2, r2]$,那么我们如果把$[l2, r2]$换成$[l1, r1]$的话 这个答案肯定还是满足题意的. 甚至可能腾出了可以放下其他区间的…

TIANKENG’s restaurant Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 1360    Accepted Submission(s): 545 Problem Description TIANKENG manages a restaurant after graduating from ZCMU, and tens…

链接:pid=4883">带我学习.带我飞 第一次BC,稳挂,WA n多次.今天又一次做了一下 略挫 #include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> #include <map> #include <string> #include <vector> #include <set> #inclu…

Restaurant Time Limit:4000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Description A restaurant received n orders for the rental. Each rental order reserve the restaurant for a continuous period of time, the i-th order…

题目链接:http://codeforces.com/contest/597 A. Divisibility time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Find the number of k-divisible numbers on the segment [a, b]. In other words you need…

Tired of boring office work, Denis decided to open a fast food restaurant. On the first day he made aa portions of dumplings, bb portions of cranberry juice and cc pancakes with condensed milk. The peculiarity of Denis's restaurant is the procedure o…

1692: [Usaco2007 Dec]队列变换 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 1383  Solved: 582[Submit][Status][Discuss] Description FJ打算带他的N(1 <= N <= 30,000)头奶牛去参加一年一度的“全美农场主大奖赛”.在这场比赛中,每个参赛者都必须让他的奶牛排成一列,然后领她们从裁判席前依次走过. 今年,竞赛委员会在接受队伍报名时,采用了一种新的登记规则:他们把所…

Wooden Sticks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 15564    Accepted Submission(s): 6405 Problem Description There is a pile of n wooden sticks. The length and weight of each stick a…