#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Mon Dec 2 04:47:07 2019
"""
#ary = ['aa','bb','cc']
#s = ""
def Join(array, sep=' '):
s = ''
l = len(array)
for i in range(l):
s = s+array[i]
if(i<l):
s = s+sep
return s
#print(Join(ary, '!'))
#print(Join(ary))