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#include<iostream>
#include<cstdio>
#include<cmath>

using namespace std;

int main(){
    unsigned long long int suma = 0, n, n2, min_np = 0, banknot;
    bool np = false;
    cin >> n;
    n2 = n;
    while (n--) {
        cin >> banknot;
        suma += banknot;
        if (banknot % 2 == 1){
            np = !np;
            if (min_np == 0) min_np = banknot;
            else if (min_np > banknot) min_np = banknot;
        }
    }
    if (n2 == 1 && np) cout << "NIESTETY\n";
    else cout << suma - (np ? min_np : 0) << endl;
}