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#include <iostream>
using namespace std;
int main ()
{
    int bajt, x, halo=1000;
    long long suma=0;
    cin >>bajt;

    for (int start=0; start<bajt ; start++)
    {
        cin>>x;
        suma+=x;
        if (x%2==1)
        {
            if(halo>x)
            {
                halo=x;
            }
        }
    }
        if(suma%2==1 && suma-halo==0)
        {
          cout << "NIESTETY";
        }
        else
        {
            if(suma%2==1)
            {
            cout << suma-halo;
            }
            else
            {
                cout << suma;
            }
        }
    }