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#include <iostream>
using namespace std;

int n;

int main()
{
	std::ios_base::sync_with_stdio(false);
	cin>>n;
	long sum=0;
	long smallestOdd=1000;
	
	long a;
	for(int k=0;k<n;k++)
	{
		cin>>a;
		sum+=a;

		if(a%2!=0 && a < smallestOdd)
			smallestOdd = a;
	}

	if (sum%2==0)
		cout<<sum<<endl;
	else
	{
		if (smallestOdd == 1000 || n==1)
			cout<<"NIESTETY"<<endl;
		else
			cout<<sum-smallestOdd<<endl;
	}
	return 0;
}