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#include <bits/stdc++.h>
using namespace std;
int n,a;
int mini;
int suma;
int main()
{
mini=100000;
ios_base::sync_with_stdio(0);
cin>>n;
for(int i=0;i<n;i++)
{
  cin>>a;
  suma+=a;
if(a%2 && a<mini)mini=a;
}
if(suma%2)suma-=mini;
if(suma==0)cout<<"NIESTETY";
else
cout<<suma;

}