#!/bin/python3

import math
import os
import random
import re
import sys
from typing import List

def print_gmail(first_names: List[str], emails: List[str]):
    paired = dict(zip(emails, first_names))
    filtered = dict(filter(lambda data: "@gmail.com" in data[0], paired.items()))
    ordered_name = []
    ordered_email = []
    for name in filtered.values():
        ordered_name.append(name)
    ordered_name.sort()
    for name in ordered_name:
        print(name)


if __name__ == '__main__':
    N = int(input().strip())
    
    names = []
    emails = []
    
    for N_itr in range(N):
        first_multiple_input = input().rstrip().split()

        firstName = first_multiple_input[0]
        names.append(firstName)

        emailID = first_multiple_input[1]
        emails.append(emailID)
    print_gmail(names, emails)