import sys

n = int(sys.argv[1])

def letra_x(n):
    res = ""
    j = n-1
    for i in range(n):
        indiceIzq = i
        indiceDer = j
        for k in range(n):
            if k == indiceIzq or k == indiceDer:
                res += "*"
            else:
                res += " "
        res+= "\n"
        j = j-1
    return res

print(letra_x(n))