0是空心，1是实心，顺序反了
by Lcx_AK_IOI @ 2023-12-26 21:10:39
给个关注呗？大号:
@[123lichengxi123](/user/1003209)
by Lcx_AK_IOI @ 2023-12-26 21:11:34
AC代码:
```python
a,b,c,f=input().split()
a=int(a)
b=int(b)
f=int(f)#f也需要转int
if f == 1:#0是空心，1是实心
for i in range(0,a):
print(c*b)
else:
print(c*b)
for x in range(a-2):
print(c+' '*(b-2)+c)
print(c*b)
```
@[zhuzheyuan](/user/1105375)
在原代码上稍微改了一，AA可通过
by cypher_cat @ 2023-12-26 21:21:45
@[zhuzheyuan](/user/1105375) 别粗心(像我刚学的时候一样)
by Lcx_AK_IOI @ 2023-12-26 21:23:59
@[Lcx_AK_IOI](/user/1166817)
关注了
by zhuzheyuan @ 2024-01-01 12:52:03