import sys, re

text = sys.stdin.read().splitlines()[1:]

match_pattern = re.compile(
    r"^[a-z]+\s"
    r"<[a-z](\w|[.-])*[@][a-z]+[.][a-z]{1,3}>"
, re.I)

match_list = [re.search(match_pattern, line) for line in text]

for match in match_list:
    if match: sys.stdout.write(f'{match.group()}\n')