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#include <cstdio>

int main()
{
    int n, sum=0, mine=1001, x, even=0;
    scanf("%d", &n);
    if(n == 1)
    {
        scanf("%d", &x);
        if(x&1)
            printf("NIESTETY");
        else
            printf("%d", x);
    }
    else
    {
        for(int i=0; i<n; i++)
        {
            scanf("%d", &x);
            if(x&1)
            {
                if(x < mine)
                    mine = x;
                even++;
            }
            sum += x;
        }
        if(even&1)
            sum -= mine;
        printf("%d", sum);
    }
    return 0;
}