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#include <cstdio>
#include <algorithm>

using namespace std;

int main()
{
    int n,sum=0,najm=10000,a;

    scanf ("%d", &n);

    while (n--)
    {
        scanf("%d", &a);
        sum+=a;

        if (a%2)
            najm=min(najm,a);
    }

    if (sum%2==0)
        printf ("%d", sum);
    else
    {
        if (najm==sum)
            printf ("NIESTETY");
        else
            printf ("%d", sum-najm);
    }

    return 0;
}