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#include <iostream>
 
using namespace std;

int main(){
	
	int n,a,pp=0,nn=0,inn=0,w=0,m=1001;

	cin >> n;
	
	for(int i=0;i<n;i++){
		
		cin >> a;
		
		if(a%2==0){
			
			pp+=a; 
			
		}
		else{
			
			nn+=a;
			inn++;
			
			if(a<m) m=a;	
			
		} 
		
	}
	
	if(inn%2!=0){
		
		inn--;
		nn-=m;	
		
	} 

	w=pp+nn;
	
	(w!=0)? cout << w << endl : cout << "NIESTETY" << endl; 

    return 0;
}