x = int(input())

satr1 = x

while satr1 > 0:
    
    print("*", end="")
    
    satr1 -= 1

print("")

satrvasat = x - 2

while satrvasat > 0:
    
    tedadevasat = x 
    
    while tedadevasat > 2:
        
        if tedadevasat == x:
            print("*", end="")
        if tedadevasat == satrvasat + 2 :
            print("*", end="")
        else:
            print(" ",end="")
            
        tedadevasat -= 1

    satrvasat -= 1
    print("*")

    
satrn = x



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