2024-07-05

n = int(input())

data = []

for i in range(n):

x = [0] * n

data.append(x)

k = 1

for i in range(n):

for j in range(n):

data[i][j] = k

k += 1

for i in range(n):

for j in range(n):

if data[i] == 0 or data[i] == n - 1 or data[j] == 0 or data[j] == n - 1: