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#include <iostream>

using namespace std;

int main(){
	int n, s=0, naj = 1000;
	
	cin >> n;
	
	int tab[n];
	
	for(int i=0; i < n; i++){
		cin >> tab[i];
	}
	
	for(int i=0; i < n-1; i++){
		s = s + tab[i];
		if((tab[i]%2==1)&&(tab[i]<naj)){
			naj = tab[i];
		}
	} 
	
	if(s%2==1){
		s = s - naj;
	}
	
	if(s%2==0 && s!=0){
		cout << s;
	}
	
	else cout << "NIESTETY";
	
	return 0;
}