/*
Task
Consider a database table, Emails, which has the attributes First Name and Email ID. Given  rows of data simulating the Emails table, print an alphabetically-ordered list of people whose email address ends in .

Input Format

The first line contains an integer, , total number of rows in the table.
Each of the  subsequent lines contains  space-separated strings denoting a person's first name and email ID, respectively.


Sample Input

6
riya riya@gmail.com
julia julia@julia.me
julia sjulia@gmail.com
julia julia@gmail.com
samantha samantha@gmail.com
tanya tanya@gmail.com
Sample Output

julia
julia
riya
samantha
tanya


*/
import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int N = in.nextInt();
        String[] str=new String[N];

        int i=0;
        Pattern p = Pattern.compile("[a-z]+@gmail.com");
        ArrayList<String> arr=new ArrayList();
        Matcher m;
        for(int a0 = 0; a0 < N; a0++)
        {
            String firstName = in.next();
            String emailID = in.next();
            m=p.matcher(emailID);
            if(m.find())
                  arr.add(firstName.toLowerCase());
        }
        Collections.sort(arr);

        for(String s:arr)
        {
            System.out.println(s);

        }
    }
}