x = int(input())

z = x
i = x
ii = x
n_2 = x - 2

while i > 0:
    print("*",end="")
    
    i -= 1

print("\n", end="")

while n_2 > 0:
    
    j = x
    
    while j > 0:
    
        if j == z or j == 1:
            print("*", end='')
        
        else:
            print(" ", end='')
    
        j -= 1

    print("\n", end="")
    
    n_2 -= 1
    
while ii > 0:
    print("*",end="")
    
    ii -= 1