time limit per test

2 seconds

memory limit per test

256 megabytes


standard input


standard output

Little beaver is a beginner programmer, so informatics is his favorite subject. Soon his informatics teacher is going to have a birthday and the beaver has decided to prepare a present for her. He planted n flowers in a row on his windowsill and started waiting for them to grow. However, after some time the beaver noticed that the flowers stopped growing. The beaver thinks it is bad manners to present little flowers. So he decided to come up with some solutions.

There are m days left to the birthday. The height of the i-th flower (assume that the flowers in the row are numbered from 1 to n from left to right) is equal to ai at the moment. At each of the remaining m days the beaver can take a special watering and water w contiguous flowers (he can do that only once at a day). At that each watered flower grows by one height unit on that day. The beaver wants the height of the smallest flower be as large as possible in the end. What maximum height of the smallest flower can he get?


The first line contains space-separated integers n, m and w (1 ≤ w ≤ n ≤ 105; 1 ≤ m ≤ 105). The second line contains space-separated integers a1, a2, …, an (1 ≤ ai ≤ 109).


Print a single integer — the maximum final height of the smallest flower.

Sample test(s)


6 2 3

2 2 2 2 1 1




2 5 1

5 8




In the first sample beaver can water the last 3 flowers at the first day. On the next day he may not to water flowers at all. In the end he will get the following heights: [2, 2, 2, 3, 2, 2]. The smallest flower has height equal to 2. It’s impossible to get height 3 in this test.


#include <cstring>
#include <cstdio>
#include <stack>
#include <map>
#include <set>
#include <cmath>
#include <cstdlib>
#include <string>
#include <queue>
#include <iostream>
#include <algorithm>

using namespace std;

const int  INF = 0x3f3f3f3f;

const long long  MAXN = 1e14;

const int MAX =1e6+100;

int a[MAX];

long long s[MAX];

int n,w,m;

bool OK(long long mid)
    long long sum=0;
    long long num=0;
    long long ans;
    for(int i=0; i<n; i++)
            sum+= (mid-a[i]-sum);
            return false;
    return true;

int main()

    scanf("%d %d %d",&n,&m,&w);
    for(int i=0; i<n; i++)
    long long high=0;
    long long L=1,R=MAXN;
        long long mid=(L+R)>>1;

    return 0;


  1. 跳转时候提示Attempt to present on while a presentation is in progress

    出现这种情况,例如:我在获取相册图片后,直接present到另一个页面,但是上一个页面可能还未dismiss,所以,要在获取相册图片的dismiss方法的complete的block里面写获取图片及跳 ...

  2. find your present (感叹一下位运算的神奇)

    find your present (2) Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Ot ...

  3. HTTP Status 400 - Required String parameter &#39;userName&#39; is not present 错误

    HTTP Status 400 - Required String parameter 'userName' is not present 错误 先mark  有时间详细写 参考链接: https:/ ...

  4. Linux 克隆虚拟机引起的&ldquo;Device eth0 does not seem to be present, delaying initialization&rdquo;

    虚拟机Vmware上克隆了一个Red Hat Enterprise Linx启动时发现找不到网卡,如下所示,如果你在命令窗口启动网络服务就会遇到"Device eth0 does not s ...

  5. required string parameter XXX is not present

    @RequestParam jQuery调用方式: deleteFile: function(filePath) { return ajax({ method: 'POST', url: '/cm/s ...

  6. 启动网卡报:Device eth0 does not seem to be present”解决办法

    Device eth0 does not seem to be present”解决办法 : 用ifconfig查看发现缺少eth0,只有lo:用ifconfig -a查看发现多出了eth1的信息. ...

  7. jQuery 跨域访问的三种方式 No &#39;Access-Control-Allow-Origin&#39; header is present on the reque

    问题: XMLHttpRequest cannot load No 'Access-Control-Allow-Origin' header is present ...

  8. js跨域访问,No &#39;Access-Control-Allow-Origin&#39; header is present on the requested resource

    js跨域访问提示错误:XMLHttpRequest cannot load http://...... No 'Access-Control-Allow-Origin' header is prese ...

  9. sudo: no tty present and no askpass program specified(转)

    sudo: no tty present and no askpass program specified 2012-11-30 09:30 5040人阅读 评论(1) 收藏 举报 修改sudo配置文 ...

  10. 虚拟机解决Device eth0 does not seem to be present 问题。

    Device eth0 does not seem to be present... 出现这个问题基本上是因为虚拟机是克隆的导致机器的mac网卡不一致,所以系统识别网卡失败:


  1. ZooKeeper1 利用虚拟机搭建自己的ZooKeeper集群

    前言:       前段时间自己参考网上的文章,梳理了一下基于分布式环境部署的业务系统在解决数据一致性问题上的方案,其中有一个方案是使用ZooKeeper,加之在大数据处理中,ZooKeeper确实起 ...

  2. 前端er是否忽略了某些东西?——读《ppk谈JavaScript》

    关于书 “不知道ppk的网站QuirksMode,说明你可能还没有真正成为资深的JavaScript程序员.” ——Roger Johansson,瑞典资深Web专家. ppk是世界级前端技术专家,W ...

  3. BUAA_OVERWATCH第一次行动前战略部署

    这太IMBA了! 需求调研问卷的反馈 #define A 调查问卷 A设计背景 随着各种新兴手游的兴起,以及各大直播间内Lying Man的火热,以及各种娱乐方式的发展,传统桌游很好地移植到app上的 ...

  4. Greenlets间如何实现互相通信?

    Greenlets互相通信之Event 1.为什么引入Event: 2.Event是什么: 3.编程实例. 为什么引入Event 1.windows中有Events,作为线程间同步的方法: 2.Gev ...

  5. MVC教程相关

    本教程所有文章导航 本系列共10篇文章,翻译自Asp.Net MVC4 官方教程,由于本系列文章言简意赅,篇幅适中,从一个示例开始讲解,全文最终完成了一个管理影片的小系统,非常适合新手入门Asp.Ne ...

  6. android 设置状态栏与标题背景颜色一致

    必须在Android4.4以上版本才能设置状态栏颜色: 一.在单个Activity里面,设置状态栏的背景: 效果: 1.在Activity的布局根文件中添加属性: android:fitsSystem ...

  7. NAT技术

    该文摘自百度百科"NAT"中的一部分 NAT(Network Address Translation,网络地址转换)是1994年提出的.当在专用网内部的一些主机本来已经分配到了本地 ...

  8. Android Programming: Pushing the Limits -- Chapter 5: Android User Interface Operations

    多屏幕 自定义View 多屏幕 @.Android 4.2 开始支持多屏幕. @.举例: public class SecondDisplayDemo extends Activity { priva ...

  9. 【iOS问题】The file “” couldn’t be opened because you don’t have permission to view it.

    当引入第三方的框架的时候 容易产生以下问题: The file "" couldn't be opened because you don't have permis ...

  10. tp2.2.2新特点

    1.不需要在配置文件中配置URL_MODEL变量就可以用普通模式和路径模式及兼容模式访问URL,但重写模式不可以. 2.当访问的URL地址没有指明具体动作(控制器里的方法)的时候,如果该控制器对应的视 ...