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#include <iostream>
using namespace std;

int main()
{
    int n;
    cin>>n;

    int tab[n];
    for (int i=0; i<n; i++)
    {
        cin>>tab[i];
    }

    int suma=0;
    int q=1001;
    int npar=0;

    for (int i=0; i<n; i++)
    {
        suma += tab[i];
        if (tab[i]%2==1)
        {
            npar++;
            if (tab[i]<q) q=tab[i];
        }
    }

    if (npar==1 && n==1) cout<<"NIESTETY";
    if (npar%2==1 && n>1) cout<<suma-q;
    if (npar%2==0) cout<<suma;



}