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#include<iostream>
using namespace std;
main(){
	ios_base::sync_with_stdio(0);
	int n,x,y=10000,s=0;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>x;
		if(x%2==1&&x<y)y=x;
		s+=x;
	}
	if(s%2==1)s-=y;
	if(s<=0)cout<<"NIESTETY\n";
	else cout<<s<<"\n";
}