"""
from __future__ import print_function
+from __future__ import unicode_literals
from builtins import int
import string
VERSION="0.1.18"
+from sys import version_info
+if version_info.major == 2: # for python2
+ import codecs
+ sys.stdin = codecs.getreader('utf-8')(sys.stdin)
+ sys.stdout = codecs.getwriter('utf-8')(sys.stdout)
+ import io
+ open=lambda f,m='r': io.open(f,m,encoding='utf-8')
+
# Are we being invoked from userv?
service=0
# If we are, which group does the caller want to modify?