a=int(input())
space=a-1
for ceng in range(a+1):
    for i in range(space+1):
        print(" ",end="")
    if ceng==2*a-4:
        for p in range(2*ceng-2):
            print("*",end="")
        print("*")
    else:
        for p in range(2*ceng-1):
            print("*",end="")   
    for i in range(space+1):
        print(" ")
    space-=1