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#include<iostream>
using namespace std;

int main () {
	int a;
	cin>>a;
	int naj=0;
	int sum=0;
	int b;
	int tab[a];
	
	for (int i=0; i<a; i++){
		cin>>b;
		sum+=b;
		tab[i]=b;
		if (b%2==1)
		naj=b;
		}
	
	if (a==1&&sum%2==1)
	cout<<"NIESTETY";
	else{
	
	if (sum%2==0)
	cout<<sum;
	else{
		for (int i=0; i<a; i++){
			if (tab[i]%2==1&&tab[i]<naj)
			naj=tab[i];
			
		}
		cout<<sum-naj;
	}
	
}
	
	
	
	
	return 0;
	}