#!/usr/bin/env python3
# -*- encoding: utf-8 -*-
'''
@File    :   body.py
@Time    :   2020/10/11 14:40:43
@Author  :   Kyomotoi
@Contact :   kyomotoiowo@gmail.com
@Github  :   https://github.com/Kyomotoi
@License :   Copyright © 2018-2020 Kyomotoi, All Rights Reserved.
'''
__author__ = 'kyomotoi'

table='fZodR9XQDSUm21yCkr6zBqiveYah8bt4xsWpHnJE7jL5VG3guMTKNPAwcF'
tr={}
for i in range(58):
	tr[table[i]]=i
s=[11,10,3,8,4,6]
xor=177451812
add=8728348608

def dec(x) -> int:
	r=0
	for i in range(6):
		r+=tr[x[s[i]]]*58**i
	return (r-add)^xor

def enc(x) -> str:
	x=(x^xor)+add
	r=list('BV1  4 1 7  ')
	for i in range(6):
		r[s[i]]=table[x//58**i%58]
	return ''.join(r)