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#include <iostream>
using namespace std;

int main(){
    ios_base::sync_with_stdio(0);
    int min = 1001, suma = 0, n, a;
    cin >> n;
    for(int i = 0; i < n; i++){
        cin >> a;
        suma += a;
        if (a% 2 == 1 and a < min)
            min = a;
    }
    if(suma % 2 == 1 and (min == 1001 or n == 1))
        cout <<"NIESTETY";
    else if(suma % 2 == 0)
        cout << suma;
    else
        cout << suma - min;
}