import re
import email.utils

n = int(input())

regex_pattern = r'^([a-zA-Z])([a-zA-Z0-9-._]+)@([a-zA-Z]+)\.([a-zA-Z]{1,3})$'
for _ in range(n):
    name, user_email = email.utils.parseaddr(input())
    if re.match(regex_pattern, user_email):
        print(email.utils.formataddr((name, user_email)))

from email.utils import parseaddr
from email.utils import formataddr
import re

pair_list = []

while True:
    try:
        line = input()
        if not line.strip():  # If an empty line is entered, stop taking input
            break
        pair_list.append(line)
    except EOFError:
        break

def validate_username(pair):
    username = pair[0]
    pattern = r'^[a-zA-Z][a-zA-Z0-9-._]*$'
    if re.match(pattern, username):
        return True
    return False

def validate_email(pair):
    email = pair[1]
    pattern = r'^[a-zA-Z][a-zA-Z0-9._-]+@[a-zA-Z][a-zA-Z0-9]+\.[a-zA-Z]{1,3}$'
    if re.match(pattern, email):
        return True
    return False
    
for element in pair_list: 
    pair = parseaddr(element)
    if(validate_username(pair) and validate_email(pair)):
        print(formataddr(pair))

import email.utils
import re

n=int(input())
name_email_list=[input() for _ in range(n)]


for name_mail in name_email_list:

    name, email_name =email.utils.parseaddr(name_mail)
    reg_exp=r'^[a-zA-Z]{1}[0-9a-zA-Z\-\._]+@[a-zA-Z]+\.[a-zA-Z]{1,3}$'
    m=re.match(reg_exp,email_name)
    try:
        m.group()
        print(email.utils.formataddr((name, email_name)))
    except AttributeError:
        continue

import email.utils
import re

pattern = re.compile(r'[a-zA-Z](\w|-|\.)*@[a-zA-Z]*\.[a-zA-Z]{0,3}$')
for _ in range(int(input())):
    t = email.utils.parseaddr(input())
    if pattern.match(t[1]):
        print(email.utils.formataddr(t))

import email.utils
import re
n = int(input())
for i in range(n):
    addr = input()
    uname, eaddr = email.utils.parseaddr(addr)
    pat = r'^[a-zA-Z]+[\w.-]+@[a-zA-Z]+\.[a-zA-Z]{1,3}$'
    ret = re.match(pat, eaddr)
    #print(ret)
    if uname != '' and ret != None:
        print(addr)