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#include <cstdio>

using namespace std;

int main()
{
    int n, res = 0, x, minOdd = 1000000, countOdd = 0;
    scanf("%d", &n);

    for(int i = 0;i < n;++i)
    {
        scanf("%d", &x);

        if(x%2 == 1)
        {
            ++countOdd;
            if(x < minOdd)
                minOdd = x;
        }
        res += x;
    }

    if(countOdd%2 == 1)
        res -= minOdd;

    if(res > 0)
        printf("%d\n", res);
    else
        printf("NIESTETY\n");

    return 0;
}