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#include <iostream>
#define ll long long
#define inf 100000000000
using namespace std;

ll suma=0;
ll minn=inf;
ll licznik=0;
int main()
{
    ios_base::sync_with_stdio(0);
    int n;
    cin>>n;
    for(int i=0;i<n;i++)
    {
        ll a;
        cin>>a;
        suma+=a;
        if(a%2!=0)
        {
            licznik++;
            minn=min(a,minn);
        }
    }
    if(licznik%2!=0) suma-=minn;
    if(suma) cout<<suma<<endl;
    else cout<<"NIESTETY"<<endl;
}