using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        SortedDictionary<string,string> d=new SortedDictionary<string,string>(); 

    int n=Convert.ToInt32(Console.ReadLine());

        for(int i=0

            ;i<n;i++)

        {

        string[] k=Console.ReadLine().Split(' ');

            d.Add(k[0],k[1]);

        }

        foreach(var item in d)

        {

            if(item.Value.Contains("gmail")){

            Console.WriteLine(item.Key);

        }

        }

​

    }

}