#!/usr/bin/python
# -*- coding: UTF-8 -*-

import sys
import numpy as np


'''

把一行8个字的清单，另存为一行(4字)的清单。

'''
file_8= sys.argv[1]
file_4 = sys.argv[2]



with open(file_4, 'w', encoding='utf-8') as final_f:
    with open(file_8, 'r', encoding='utf-8-sig') as f:
        for word in f.read().splitlines():
            if len(word) ==8:
                final_f.write(word[0:4])
                final_f.write('\n')
                final_f.write(word[4:8])
                final_f.write('\n')
            else:
                print(word)