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#include <iostream>
using namespace std;

int main()
{
    int n;
    cin >> n ;

	int i;
	int suma, temp, min_np;
	
	min_np = 1001;
	suma=0;

	for (i = 0; i < n; i++)
	{
		cin >> temp;
		if ((temp%2==1)&&(temp<min_np)) min_np=temp;
		suma = suma + temp;
	}
	if (min_np==1001) min_np=0;
	if (suma%2==1) suma = suma - min_np;
	if (suma>0)
	cout << suma << endl;
	else
	cout << "NIESTETY" << endl;
    return 0;
}