# coding=UTF-8

def mandel(x, y, max_iter):
	iter = 0
	a = 0.0
	b = 0.0
	while a*a + b*b < 4 and iter < max_iter:
		temp = a*a - b*b + x
		b = 2*a*b + y
		a = temp
		iter += 1
	return iter

Shades = "_.-'"

scale = 20
max_iter = 20

buffer = ""
for y in range(0, int(2.6*scale)):
	y0 = (y - 2.6*scale/2) / scale
	for x in range(0, int(3.5*scale)):
		x0 = (x - 2.5*scale) / scale
		iter = mandel(x0, y0, max_iter)
		buffer += Shades[int((len(Shades)-1)*iter/max_iter)]
	buffer += "\n"
print buffer