关于#python#的问题，请各位专家解答！

a=int(input())
for i in range(1,a+1):
    if i==1 or i==a:
        for j in range(a):
            print('* ',end='')
    else:
        print('* ',end='')
        for j in range(a-2):
            print('  ',end='')
        print('* ',end='')
    print()