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#include <iostream>
#include <climits>

using namespace std;


int main()
{
    int n, a, sum;
    int minOdd = INT_MAX;

    cin >> n;
    sum = 0;
    for (int i = 0; i < n; i++)
    {
        cin >> a;
        sum += a;
        if (a % 2 == 1)
        {
            minOdd = min(minOdd, a);
        }
    }

    if (sum % 2 == 1)
    {
        sum -= minOdd;
    }

    if (sum > 0)
    {
        cout << sum;
    }
    else
    {
        cout << "NIESTETY";
    }

    return 0;
}