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#include <iostream>

using namespace std;

int suma,ilem,minim;

int main()
{
    suma = 0;
    cin>>ilem;
    int mon[ilem];
    for (int a=0; a<ilem; a++) {
        cin>>mon[a];
        if (mon[a]%2!=0);{
            minim = mon[a];
            if (mon[a]<minim)
            minim = mon[a];}
        suma=suma+mon[a];
    }
    if (suma%2==0 && suma>0) cout<<suma;
    else suma = suma-minim;
     if (suma%2==0 && suma>0) cout<<suma;
     else cout<<"NIESTETY";
    return 0;
}