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#include<iostream>
using namespace std;

long long n, a, min_nparz,suma ;

int main(){
	ios_base::sync_with_stdio(0);
	
	cin >> n;
	
	min_nparz = 999999999;
	
	for(int i = 0; i < n; i++){
		cin >> a;
		if(a % 2 == 1){
			if(min_nparz > a)min_nparz = a;
		}
		suma += a;
	}
	
	if(suma % 2 == 0)cout<<suma<<endl;
	else{
		if(suma == min_nparz)cout<<"NIESTETY"<<endl;
		else cout<<(suma - min_nparz)<<endl;
	}
	
	
	return 0;
}