C. Planning(贪心)
1 second
512 megabytes
standard input
standard output
Helen works in Metropolis airport. She is responsible for creating a departure schedule. There are n flights that must depart today, the i-th of them is planned to depart at the i-th minute of the day.
Metropolis airport is the main transport hub of Metropolia, so it is difficult to keep the schedule intact. This is exactly the case today: because of technical issues, no flights were able to depart during the first k minutes of the day, so now the new departure schedule must be created.
All n scheduled flights must now depart at different minutes between (k + 1)-th and (k + n)-th, inclusive. However, it's not mandatory for the flights to depart in the same order they were initially scheduled to do so — their order in the new schedule can be different. There is only one restriction: no flight is allowed to depart earlier than it was supposed to depart in the initial schedule.
Helen knows that each minute of delay of the i-th flight costs airport ci burles. Help her find the order for flights to depart in the new schedule that minimizes the total cost for the airport.
The first line contains two integers n and k (1 ≤ k ≤ n ≤ 300 000), here n is the number of flights, and k is the number of minutes in the beginning of the day that the flights did not depart.
The second line contains n integers c1, c2, ..., cn (1 ≤ ci ≤ 107), here ci is the cost of delaying the i-th flight for one minute.
The first line must contain the minimum possible total cost of delaying the flights.
The second line must contain n different integers t1, t2, ..., tn (k + 1 ≤ ti ≤ k + n), here ti is the minute when the i-th flight must depart. If there are several optimal schedules, print any of them.
5 2
4 2 1 10 2
20
3 6 7 4 5
Let us consider sample test. If Helen just moves all flights 2 minutes later preserving the order, the total cost of delaying the flights would be (3 - 1)·4 + (4 - 2)·2 + (5 - 3)·1 + (6 - 4)·10 + (7 - 5)·2 = 38 burles.
However, the better schedule is shown in the sample answer, its cost is (3 - 1)·4 + (6 - 2)·2 + (7 - 3)·1 + (4 - 4)·10 + (5 - 5)·2 = 20burles.
算法:贪心
注意:不要用vector.erase,时间复杂度是O(n),用set.erase,时间复杂度时O(n)。
#include <iostream>
#include <cstdio>
#include <queue>
#include <algorithm>
#include <set> using namespace std; const int maxn = 1e7+; typedef long long ll; struct node {
ll id;
ll val;
}arr[maxn]; set<ll> vis;
long long ans[maxn];
int n, k; bool cmp(node x, node y) {
if(x.val == y.val) {
return x.id > y.id;
}
return x.val > y.val;
} int main() {
scanf("%d %d", &n, &k);
for(int i = ; i <= n; i++) {
scanf("%lld", &arr[i].val);
arr[i].id = i;
vis.insert(i + k);
}
sort(arr + , arr + n + , cmp);
long long sum = ;
for(int i = ; i <= n; i++) {
ll u = *vis.lower_bound(arr[i].id);
sum += (u - arr[i].id) * arr[i].val;
ans[arr[i].id] = u;
vis.erase(u);
}
printf("%lld\n", sum);
for(int i = ; i <= n; i++) {
printf("%lld ", ans[i]);
}
return ;
}
C. Planning(贪心)的更多相关文章
- cf 853 A planning [贪心]
题面: 传送门 思路: 一眼看得,这是贪心[雾] 实际上,我们要求的答案就是sigma(ci*(ti-i))(i=1~n),这其中sigma(ci*i)是确定的 那么我们就要最小化sigma(ci*t ...
- #433 Div2 Problem C Planning (贪心 && 优先队列)
链接 : http://codeforces.com/contest/854/problem/C 题意 : 有 n 架飞机需要分别在 1~n 秒后起飞,允许起飞的时间是从 k 秒后开始,给出每一架飞机 ...
- (codeforces 853A)Planning 贪心
Helen works in Metropolis airport. She is responsible for creating a departure schedule. There are n ...
- codeforces round 433 C. Planning 贪心
题目大意: 输入n,k,代表n列航班,初始始发实践为1,2,3分钟以此类推,然后输入n个整数分别代表延迟1分钟第i个航班损失多少钱,然后调整后的始发时间表是这样的,任何一辆航班的始发时间不能在他的初始 ...
- Codeforces 433 Div.2(A、B、C、D)
A. Fraction 暴力遍历1-1000,取组成的真分数比值最大且分子分母gcd为1时更新答案 代码: #include <stdio.h> #include <algorith ...
- codeforces 854C.Planning 【贪心/优先队列】
Planning time limit per test 1 second memory limit per test 512 megabytes input standard input outpu ...
- B - Planning 早训 贪心
B - Planning 这个题目我知道要贪心,也知道怎么贪,但是写不出来,感觉自己好菜. 这个题目要用优先队列维护. 题目大意是飞机延误,不同的飞机每次延误一分钟,它的代价不同,然后问,怎么安排才能 ...
- CodeForces - 853A Planning (优先队列,贪心)
Helen works in Metropolis airport. She is responsible for creating a departure schedule. There are n ...
- Codeforces 854C Planning 【贪心】
<题目链接> 题目大意: 表示有n架飞机本需要在[1,n]时间内起飞,一分钟只能飞一架.但是现在[1,k]时间内并不能起飞,只能在[k+1,k+n]内起飞.ci序号为i的飞机起飞延误一分钟 ...
随机推荐
- AutoCAD2013 以上利用AccoreConsole+ c# NetApi Windows Froms 封装
1# 封装类 public static class CmdHelper { /// <summary> /// 调用AutoCAD 安装目录下的AccoreConsole.exe来实现批 ...
- 【原创】大叔经验分享(60)hive和spark读取kudu表
从impala中创建kudu表之后,如果想从hive或spark sql直接读取,会报错: Caused by: java.lang.ClassNotFoundException: com.cloud ...
- opencv3.3.1 + win64 + contrib + cuda 编译
一 . opencv3.3.1 + win64 + contrib + cuda 编译 1.下载各种依赖 下载安装cuda https://developer.nvidia.com/cuda- ...
- 06 Go语言基本命令
在命令行执行go命令查看相关的Go语言命令: 以windows为例,在DOS窗口输入go Go is a tool for managing Go source code. Usage: go com ...
- CSS基础:text-overflow:ellipsis溢出文本显示省略号的详细方法_CSS教程
4要素: width: 125px; //宽度必须 text-overflow: ellipsis/clip; //省略号或裁剪: white-space: nowrap;//强制内容在一行显示; ...
- TVM设备添加以及代码生成
因为要添加的设备是一种类似于GPU的加速卡,TVM中提供了对GPU编译器的各种支持,有openCl,OpenGL和CUDA等,这里我们选取比较熟悉的CUDA进行模仿生成.从总体上来看,TVM是一个多层 ...
- 基于MQTT的串口数据转发器
问: ComHub能做什么?ComHub使用MQTT协议,将串口数据经TCP分发出去.这种结构可以实现很多功能:1.COM-Over-TCP: 将COM数据使用TCP远程传送;2.COM多播:一个CO ...
- 第11章 Spring Boot使用Actuator
在生产环境中,需要实时或定期监控服务的可用性,spring-Boot的Actuator 功能提供了很多监控所需的接口. Actuator是Spring Boot提供的对应用系统的自省和监控的集成功能, ...
- cubase 使用冻结功能 节省电脑资源
- Elasticsearch索引操作
一.索引初始化操作 插件推荐使用head.marvel (收费) 1.1 创建新索引 curl -XPUT 'http://localhost:9200/test' -d ' { "sett ...