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#include <iostream>
using namespace std;
int main()
{
	int n, il_np = 0, mn_np = 1001, suma = 0, pom;
	cin >> n;
	for(int i = 0; i < n; i++)
	{
		cin >> pom;
		suma = suma + pom;
		if(pom%2 == 1)
		{
			il_np++;
			mn_np = min(mn_np, pom);
		}
	}
	if(il_np == 1 && n == 1)
	{
		cout << "NIESTETY";
	}
	else
	{
		if(suma%2 == 1)
		{
			cout << suma-mn_np;
		}
		else
		{
			cout << suma;
		}
	}
}