n = int(input("Enter size of square: "))

#lower right half
for i in range(n):
    for j in range(n):
        if i+j < n-1:
            print(' ', end="")
        else:
            print('*', end="")
    print()

    
print()
# border
for i in range(n):
    for j in range(n):
        if i==0 or i==n-1 or j==0 or j==n-1:
            print('*', end="")
        else:
            print(' ', end="")
    print()

    
print()
# big X
for i in range(n):
    for j in range(n):
        if j==i or j==n-1-i:
            print('*', end="")
        else:
            print(' ', end="")
    print()