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题目 2058:

[STL训练]Who's in the Middle

时间限制: 1s 内存限制: 128MB 提交: 850 解决: 388

题目描述

FJ is surveying his herd to find the most average cow.He wants to know how much milk this 'median' cow gives:half of the cows give as much or more than the median; half give as much or less. 

Given an odd number of cows N (1 <= N < 10,000) and their milk output (1..1,000,000), find the median amount of milk  given such that at least half the cows give the same amount of milk or more and at least half give the same or less.

输入格式


* Line 1: A single integer N 
* Lines 2..N+1: Each line contains a single integer that is the milk    
                          output of one cow.

输出格式

* Line 1: A single integer that is the median milk output.

样例输入

5
2
4
1
3
5

样例输出

3

提示

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