#! /usr/bin/python3
import sys
import re
if __name__ == '__main__':
if len(sys.argv)>1:
allowed_vlan = sys.argv[1]
if re.search('[0-9]{1,4}-[0-9]{1,4}', allowed_vlan):
for tmp in allowed_vlan.split('-'):
if int(tmp) not in range(1, 4095):
sys.exit(1)
else:
if int(allowed_vlan) not in range(1, 4095):
sys.exit(1)
else:
sys.exit(2)
sys.exit(0)