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#include <iostream>

using namespace std;

int main(){
	int a = 0, b = 0, sum = 0, np = 0;

	cin >> a;
	for (int i = 0; i < a; i++)
	{
		cin >> b;
		if (b%2){
			if (np){
				sum += b;
				sum += np;
				np = 0;
			}
			else
			{
				np = b;
			}
		}
		else
		{
			sum += b;
		}
	}
	if (sum){
		cout << sum;
	}
	else
	{
		cout << "NIESTETY";
	}
	cin >> a;

	return 0;
}