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#include <cstdio>
using namespace std;

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

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