include[HTML_REMOVED]

using namespace std;
int main() {
long long x;
long long arr[10001];
while (cin >> x) {
if (x == 0) {
return 0;
}
for (int i = 0; i < x; i++) {
cin >> arr[i];
}
sort(arr + 0, arr + x);
if (x % 2 == 0) {
cout << (arr[x / 2] + arr[x / 2 - 1]) / 2 << endl;
} else {
cout << arr[x / 2] << endl;
}
}
return 0;
}