#include<iostream>
#include<algorithm>
using namespace std;
int main(){
  int N, i;
  int A[1000];
  cin >> N;
  sort(A , A + N, greater<int>());
  for(i = 0; i < N; i++){
      cin >> A[i];
  }
  
 cout << (A[N/2] + A[(N-1)/2]) / 2 << endl;
  return 0;
}