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#include <cstdio>
#include <algorithm>

int main()
{
    int n, sum = 0, min_odd = 1000;
    scanf ("%d", &n);

    while (n--)
    {
        int a;
        scanf ("%d", &a);

        sum += a;

        if (a % 2 == 1)
            min_odd = std::min(min_odd, a);
    }

    if (sum % 2 == 1)
        sum -= min_odd;

    printf(sum == 0 ? "NIESTETY\n" : "%d\n", sum);

    return 0;
}