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//Grzegorz Krzysiak
#include <iostream>

using namespace std;

int main(){
    ios_base::sync_with_stdio(0);

    int num, suma = 0, mini = 1000;
    cin >> num;

    for(int x=0;x<num;x++){
        int tmp;
        cin >> tmp;
        if(tmp%2 == 1 && tmp < mini) mini = tmp;
        suma += tmp;
    }

    if(suma%2 == 1){
        suma -= mini;
    }

    if(suma)
        cout << suma;
    else
        cout << "NIESTETY";
    return 0;
}