CF545D Queue

    • 374通过
    • 743提交
  • 题目来源 CodeForces 545D
  • 评测方式 RemoteJudge
  • 标签 贪心 队列
  • 难度 省选/NOI-
  • 时空限制 1000ms / 256MB

题解

  • 提示:收藏到任务计划后,可在首页查看。
  • 体验新版界面

    最新讨论 显示

    推荐的相关题目 显示

    题意翻译

    有一个有n个人的队伍,其中第i个人需要t[i]分钟来服务,期间后面的人就要等着。如果一个人等待的时间大于了他被服务的时间,他就会失望。你的任务是重排队伍,使失望的人尽量的少,并只需输出不失望的人的数量的最大值

    题目描述

    Little girl Susie went shopping with her mom and she wondered how to improve service quality.

    There are $ n $ people in the queue. For each person we know time $ t_{i} $ needed to serve him. A person will be disappointed if the time he waits is more than the time needed to serve him. The time a person waits is the total time when all the people who stand in the queue in front of him are served. Susie thought that if we swap some people in the queue, then we can decrease the number of people who are disappointed.

    Help Susie find out what is the maximum number of not disappointed people can be achieved by swapping people in the queue.

    输入输出格式

    输入格式:

    The first line contains integer $ n $ ( $ 1<=n<=10^{5} $ ).

    The next line contains $ n $ integers $ t_{i} $ ( $ 1<=t_{i}<=10^{9} $ ), separated by spaces.

    输出格式:

    Print a single number — the maximum number of not disappointed people in the queue.

    输入输出样例

    输入样例#1: 复制
    5
    15 2 1 5 3
    
    输出样例#1: 复制
    4
    

    说明

    Value $ 4 $ is achieved at such an arrangement, for example: $ 1,2,3,5,15 $ . Thus, you can make everything feel not disappointed except for the person with time 5.

    提示
    标程仅供做题后或实在无思路时参考。
    请自觉、自律地使用该功能并请对自己的学习负责。
    如果发现恶意抄袭标程,将按照I类违反进行处理。