x = int(input())

i = 1

while x >= i:
    j = 1 
    
    if i == 1 or i == x:
        while x >= j:
            print("*", end="")
            j += 1
    else:
        print("*", end="")
        while x - 2 >= j:
            print(" ",end="")
            j += 1
        print("*", end="")
    
    print("")
    i += 1