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#include <iostream>
#include <stdio.h>
#include <vector>
using namespace std;

int main() {
    int sumOfBills = 0;
    int N;
    cin >> N;

    int a;
    int minOdd = 1000;
    int numOddBills = 0;
    for (int i=0; i<N; ++i) {
        cin >> a;
        if (a % 2 == 0)
            sumOfBills += a;
        else {
            ++numOddBills;
            sumOfBills += a;
            if (a < minOdd)
                minOdd = a;
        }
    }

    if (numOddBills % 2 != 0) {
        sumOfBills -= minOdd;
    }

    if (sumOfBills == 0)
        printf("NIESTETY\n");
    else
        printf("%d\n", sumOfBills);

    return 0;
}