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#include<iostream>

using namespace std;

int main()
{
	ios_base::sync_with_stdio(0);
	int n;
	cin >> n;
	int m=1e9+9;
	int sum=0;
	int w;
	for(int i=0;i<n;i++)
	{
		cin >> w;
		sum+=w;
		if(w%2==1&&w<m)
			m=w;
	}
	if(sum%2==1)
	{
		sum-=m;
	}
	if(sum<=0)
		cout << "NIESTETY" << endl;
	else
		cout << sum << endl;
	return 0;
}