#!/usr/bin/env python

import sys
import six
import subprocess

PIPE = subprocess.PIPE

enc = lambda s: s.encode('utf-8') if six.PY2 else s.encode()
dec = lambda b: unicode(b, 'utf-8') if six.PY2 else b.decode()

def do_cmd(cmd, in_b):
	cmd = enc(cmd)
	proc = subprocess.Popen(cmd, shell=True, stdin=PIPE, stdout=PIPE)
	return proc.communicate(in_b)[0]

def get_stdin():
	fi = sys.stdin if six.PY2 else sys.stdin.buffer
	return fi.read() # b

def put_stdout(b):
	fo = sys.stdout if six.PY2 else sys.stdout.buffer
	fo.write(b)

def guess(b):
	b = do_cmd('nkf -g', b)
	return dec(b).strip()

def cvt(b, opt):
	if opt == 'ASCII':
		return b
	d = {
		'ISO-2022-JP': '-j',
		'EUC-JP': '-e',
		'Shift_JIS': '-s',
		'UTF-8': '-u',
	}
	if opt not in d.values():
		opt = d.get(opt, '-u')
	return do_cmd('nkf ' + opt, b)

if __name__ == "__main__":
	b = get_stdin()
	opt = guess(b)
	u8 = cvt(b, '-u')
	s = dec(u8)
	# ...
	u8 = enc(s)
	b = cvt(u8, opt)
	put_stdout(b)
# EOF