#!/usr/bin/env python3
# -*- coding: utf-8 -*-



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))