import re
import sys

# PART 1

POINT_RE = r"position=<\s*(-?\d+),\s*(-?\d+)> velocity=<\s*(-?\d+),\s*(-?\d+)>\n"

class Point:
	def __init__(self, pos, vel):
		self.pos = pos
		self.vel = vel

	@classmethod
	def from_line(cls, line):
		match = re.fullmatch(POINT_RE, line)
		x, y, dx, dy = map(int, match.groups())
		return cls((x, y), (dx, dy))

	def step(self):
		x, y = self.pos
		dx, dy = self.vel
		self.pos = (x + dx, y + dy)

class Field:
	def __init__(self, points=None):
		self.points = points or []
		self.steps = 0

	@classmethod
	def from_file(cls, filename):
		points = []
		with open(filename, "r") as f:
			for line in f:
				points.append(Point.from_line(line))
		return cls(points=points)

	def step(self):
		for point in self.points:
			point.step()
		self.steps += 1

	def step_until_in_limits(self):
		while True:
			coords = set(point.pos for point in self.points)
			xs = set(x for (x, _) in coords)
			ys = set(y for (_, y) in coords)

			if max(xs) - min(xs) < 500:
				return

			self.step()

			print(min(xs), max(xs), min(ys), max(ys))

	def render(self):
		coords = set(point.pos for point in self.points)
		xs = set(x for (x, _) in coords)
		ys = set(y for (_, y) in coords)

		for y in range(min(ys), max(ys) + 1):
			for x in range(min(xs), max(xs) + 1):
				if (x, y) in coords:
					print("#", end="")
				else:
					print(".", end="")
			print()

		print(self.steps)

# PART 2

def main(filename):
	print(f"Solutions for {filename}")

	print("Part 1:")
	field = Field.from_file(filename)
	field.step_until_in_limits()
	while input() == "":
		field.render()
		field.step()

	print("Part 2: NYI")

if __name__ == "__main__":
	for filename in sys.argv[1:]:
		main(filename)