#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys

def basic_triforce():
    return " ▲ \n▲ ▲"

def triforce_upper(element, size):
    result = []
    for line in element.splitlines():
        result.append(" " * size + line)

    return "\n".join(result)

def triforce_double(element, size):
    result = []
    counter = 0
    for line in element.splitlines():
        result.append(line + " " * (size - 1 - int(counter / 2) * 2) + line)
        counter += 1

    return "\n".join(result)

def iterate_triforce(accum, size):
    if size / 2 >= int(sys.argv[1]):
        print accum
    else:
        accum = triforce_upper(accum, size) + "\n" + triforce_double(accum, size)
        iterate_triforce(accum, size * 2)

iterate_triforce(basic_triforce(), 2)