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#include <cstdio>
#include <algorithm>

using namespace std;

int main() {
    int n;
    scanf("%d", &n);
    int bills[n];

    for (int i = 0; i < n; i++)
        scanf("%d", bills + i);

    sort(bills, bills + n);

    int sum = 0;
    for (int i = 0; i < n; i++)
        sum += bills[i];

    if (sum % 2)
        for (int i = 0; i < n; i++)
            if (bills[i] % 2) {
                sum -= bills[i];
                break;
            }

    if (sum % 2 || sum == 0)
        printf("NIESTETY\n");
    else
        printf("%d\n", sum);

    return 0;
}