""" Count the dots on slightly folded transparent paper """

dots = set()
with open("13_input.txt") as f:
    for line in f:
        if line.strip() == "":
            break
        else:
            dots.add(tuple(int(a) for a in line.split(",")))

    for fold in f:
        direction, fold_line = fold.strip().split(" ")[2].split("=")
        fold_line = int(fold_line)

        folded_dots = set()
        for x, y in dots:
            if direction == "x" and x > fold_line:
                diff = x - fold_line
                x = fold_line - diff
            elif direction == "y" and y > fold_line:
                diff = y - fold_line
                y = fold_line - diff

            folded_dots.add((x, y))

        dots = folded_dots
        # break  # First part just wants the number of dots after first fold.



xs, ys = list(zip(*dots))
max_x = max(xs)
max_y = max(ys)

for j in range(max_y + 1):
    line = []
    for i in range(max_x + 1):
        if (i, j) in dots:
            line.append("#")
        else:
            line.append(".")

    print("".join(line))