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#include <cstdio>
using namespace std;

int main()
{
    int n;
    scanf("%d", &n);
    int sum = 0, mn = 10001, a, ileNparz = 0;
    for (int i = 0; i < n; i++)
    {
        scanf("%d", &a);
        if (a % 2 == 1)
        {
            ileNparz++;
            if (a < mn) mn = a;
        }
        sum += a;
    }

    if (ileNparz % 2 == 1) sum -= mn;
    if (sum == 0) printf("NIESTETY\n");
    else printf("%d\n", sum);

    return 0;
}