#include <iostream>

using namespace std;

int main() {
    long n, a, evenSum = 0, oddSum = 0, oddCount = 0, minOdd = 999, res;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> a;
        if (a % 2 == 0) {
            evenSum += a;
        } else {
            oddSum += a;
            oddCount++;
            if (a < minOdd) {
                minOdd = a;
            }
        }
    }
    if (oddCount % 2 == 1 && oddCount > 0) {
        oddSum -= minOdd;
    }
    res = evenSum + oddSum;
    if (res != 0) {
        cout << res << endl;
    } else {
        cout << "NIESTETY" << endl;
    }
    return 0;
}