Who's in the Middle 
Time Limit: 1000ms, Special Time Limit:2500ms, Memory Limit:65536KB 
Total submit users: 33, Accepted users: 29 
Problem 10543 :
No special judgement

Problem description 
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.

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

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

Sample Input 
5
2
4
1
3
5

Sample Output 
3 
Judge Tips 
Five cows with milk outputs of 1..5
1 and 2 are below 3; 4 and 5 are above 3.

Problem Source 
USACO 2004 November test data by qshj

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