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#include <iostream>

using namespace std;

int sum, lowestOdd;

int main()
{
	ios_base::sync_with_stdio(0);
	int n;
	cin>>n;
	sum=0;
	lowestOdd=1001;
	for(int i=0;i<n;++i)
	{
		int a;
		cin>>a;
		sum+=a;
		if(a%2==1)
			lowestOdd=min(a,lowestOdd);
	}
	if(sum%2==0)
		cout<<sum<<"\n";
	else
	{
		sum-=lowestOdd;
		if(sum>0)
			cout<<sum<<"\n";
		else
			cout<<"NIESTETY\n";
	}
	return 0;
}