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#include<iostream>
using namespace std;
int main()
{
    int n, bkt, suma=0, np=1001;
    cin>>n;
    for(int i=0;i<n;i++)
    {
        cin>>bkt;
        suma+=bkt;
        if((bkt%2)==1)
        {
            if(bkt<np)
                np=bkt;
        }
    }
    if((suma%2)==1)
        suma-=np;
    if((suma%2)==0&&suma>0)
        cout<<suma;
    else
        cout<<"NIESTETY";
}