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#include <cstdio>

int min_np, n, sm , x , p[2];

int main()
{
    scanf("%d",&n);
    while(n--)
    {
        scanf("%d", &x);
        p[x & 1]++;
        sm += x;
        min_np = (x & 1) && (!min_np || x < min_np) ? x : min_np ;
    }
    if (p[1] & 1) sm -= min_np;
    if (sm) printf("%d\n",sm);
    else puts("NIESTETY");
}