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#include <iostream>
#include <utility>
#include <limits>

using namespace std;

int main()
{
    int n;
    int suma=0;
    int min_odd=numeric_limits<int>::max();
    int nodds=0;

    cin>>n;

    for(int i=0;i<n;i++)
    {
        int t;
        cin>>t;
        suma=suma+t;
        if (t%2==1)
        {
            nodds++;
            min_odd=min(t, min_odd);
        }
    }
    if (nodds%2==1)
    {
        suma-=min_odd;
    }

    if (suma>0)
        cout << suma << endl;
    else
        cout << "NIESTETY" << endl;
    return 0;
}