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#include <iostream>
#include <algorithm>
using namespace std;
int main()
{
    ios_base::sync_with_stdio(0);
    int n, mini=10000001, suma=0;
    cin >> n;
    for (int i=0; i<n; i++)
    {
        int a;
        cin >> a;
        suma+=a;
        if (a%2==1)
            mini=min(mini, a);
    }
    if (n==1 && suma%2==1)
        cout << "NIESTETY\n";
    else if (suma%2==0)
        cout << suma;
    else
        cout << suma-mini;
    return 0;
}