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#include<iostream>
using namespace std;

int main()
{
	long long int n, b = 0;
	long long int c = 1001;
	cin >> n;
	int a[n];
	for(int i = 0; i<n; i++)
	{
		cin >> a[i];
		b+= a[i];
		if(a[i] < c && a[i]%2 == 1)
		{
			c = a[i];
		}
	}
	if(b%2 == 0 && b > 0)
	{
		cout << b << endl;
	}
	else if(b%2 == 1 && b > 0)
	{
		if((b-c) > 0)
		{
			cout << (b-c) << endl;
		}
		else if((b-c) <= 0)
		{
			cout << "NIESTETY" << endl;
		}
	}
	
}