import re

mail = raw_input()
#mail = "123@hu.123@we.i.com"

pattern_split = re.compile(r"([\w\d\&\=\+\$\,\;\?\/\-\_\.\!\~\*\'\(\)\#]*@[\w\d-]+?\.)")
pattern = re.compile(r"([\w\d\&\=\+\$\,\;\?\/\-\_\.\!\~\*\'\(\)\#]*)@([\w\d-]+?)\.")

res = ""
for item in pattern_split.split(mail):
    match = pattern.match(item)
    if match:
        g1 = match.group(1)
        g2 = match.group(2)
        if len(g2) <= 119 and len(g1) >= 3:
            res += (g1[:-3:] + "***" +"@"+g2+".")
        else:
            res += item
    else:
        res += item
print res