#include <iostream>
#include <algorithm>

using namespace std;

int main() {
    int n;

    cin >> n;

    int arr[n];

    for (int i = 0; i < n; ++i) {
        cin >> arr[i];
    }

    // Sort the array
    sort(arr, arr + n);

    int sum1 = 0, sum2 = 0;
    if (n % 2 == 0) {
        // If n is even, take the last n % 2 elements
        for (int i = n - (n % 2); i < n; ++i) {
            sum1 += arr[i];
        }
        cout << sum1 << endl;
    } else {
        // If n is odd, calculate both sums
        for (int i = n - (((n - 1) /2 )+ 1); i < n; ++i) {
            sum1 += arr[i];
        }
        for (int i = n - ((n - 1) / 2); i < n; ++i) {
            sum2 += arr[i];
        }
        // Output the largest sum
        cout << max(sum1, sum2) << endl;
    }

    return 0;
}