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#include <iostream>
#include <cmath>
#include <algorithm>

using namespace std;
int main() {
ios_base::sync_with_stdio(0);
int n;
cin>>n;
int x;
long long suma=0;
int nieparz=0;
int mini=1000000;
for(int i=0;i<n;i++)
	{
	cin>>x;
	suma+=x;
	if(x%2==1)
		{nieparz++;
		mini=min(x,mini);
		}	
		
	}
if(nieparz%2==1)
	{suma-=mini;
	}	
if(suma==0)
	cout<<"NIESTETY"<<endl;
else
 cout<<suma<<endl;		
return 0;
}