대각선이 있는 사각형

n = int(input())

for i in range(n):

for j in range(n):

if i==0 or i==n-1 or i==j or j+i==n-1 or j==0 or j==n-1:

print('*',end='')

else :

print(' ',end='')

print()

# print("*"*n)

# for i in range(n):

# print("*"," "*(n-4),"*")

# print("*"*n)