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:
            if i == j+1:
                print("*",end="")
            else:
                
                print(" ",end="")
            j += 1
        print("*", end="")
    
    print("")
    i += 1