Start: Apr, 17, 2017 10:00:00
Python程序设计基础培训第一次作业
End: Apr, 21, 2017 12:00:00
Time elapsed:
Time remaining:
Problem_ID: C
Result: Accepted
Time: 111ms
Memory: 21432kB
Author: shanzhenyu
In contest: 1085 
n,m = map(int,raw_input().strip().split());
print "*"*m
if n != 1:
	print ("*"+" "*(m-2) + "*\n")*(n-2),
	print "*"*m