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#include <iostream>
#include <climits>

using namespace std;

int main() {
    int n;
    cin >> n;

    int sum = 0;
    int minOdd = INT_MAX;

    bool flag = false;

    for(int x=0; x<n; x++){
        int tmp;
        cin >> tmp;

        if(tmp % 2 == 0){
            sum+=tmp;
            flag = true;
        } else {
            if(tmp < minOdd){
                if(minOdd != INT_MAX){
                    sum += minOdd;
                    flag = true;
                }
                minOdd = tmp;
            } else {
                sum += tmp;
                flag = true;
            }
        }
    }

    if(sum%2 == 0){
        if(flag){
            cout << sum << "\n";
        } else {
            cout << "NIESTETY\n";
        }

    } else {
        if(minOdd == INT_MAX){
            cout << "NIESTETY\n";
        } else {
            cout << sum + minOdd << "\n";
        }
    }

    return 0;
}