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#include <cstdio>

int main()
{
    int n, i, j, tmp;
    bool found = false;
    int suma = 0;
    scanf("%d", &n);
    int* tab = new int[n];
    for(i=0; i<n; i++)
    {
        scanf("%d", &tab[i]);
        suma += tab[i];
    }
    if (suma % 2 == 0 && suma > 0) printf("%d", suma);
    else
    {
        for (i=0; i<n; i++)
        {
            for (j=0; j<n-i-1; j++)
            {
                if (tab[j] > tab[j+1])
                {
                    tmp = tab[j];
                    tab[j] = tab[j+1];
                    tab[j+1] = tmp;
                }
            }
        }
        for (i=0; i<n; i++)
        {
            if (tab[i] % 2 == 1)
            {
                tmp = suma - tab[i];
                if (tmp > 0)
                {
                    printf("%d", tmp);
                    found = true;
                }
                break;
            }
        }
        if (!found || suma <= 0) printf("NIESTETY");
    }
}