#include <bits/stdc++.h> using namespace std; int main(){ int n; while(cin >> n){ if(n == 0) break; int a[n]; for(int i = 0 ; i < n ; i ++) cin >> a[i]; sort(a, a+n); if(n % 2 == 0){ cout <<(a[n/2 -1] + a[n/2])/2 << endl; }else{ cout << a[n/2] << endl; } } }