class Solution
{
    public static void Main(string[] args)
    {
        int N = Convert.ToInt32(Console.ReadLine().Trim());
        List<string> names = new List<string>();

        for (int NItr = 0; NItr < N; NItr++)
        {
            string[] firstMultipleInput = Console.ReadLine().TrimEnd().Split(' ');

            string firstName = firstMultipleInput[0];

            string emailID = firstMultipleInput[1];
            
            var regex = new Regex("[A-Za-z._]+@gmail.com");
            if(regex.IsMatch(emailID))
            {
                names.Add(firstName);
            }
        }
        
        names.Sort();
        names.ForEach(n => Console.WriteLine(n));
    }
}