import math

text: str

with open("test.txt") as f:
    text = f.read()

lines: list[str] = text.splitlines()
lines: list[int] = [[int(value) if value != "." else 11 for value in line] for line in lines]

print(lines)

total: int = 0

def trailhead_tester(ground: list[int], pos_y: int, pos_x: int, ground_y: int, ground_x: int):

    if ground[pos_y][pos_x] == 9:
        return 1

    min_x: int = max(pos_x - 1, 0)
    max_x: int = min(pos_x + 1, ground_x)
    min_y: int = max(pos_y - 1, 0)
    max_y: int = min(pos_y + 1, ground_y)

    for y, line in enumerate(ground[min_y:max_y]):
        for x, value in enumerate(line[min_x:max_x]):
            if ground[pos_y][pos_x] + 1 == value:
                return trailhead_tester(ground, pos_y + (max_y - min_y) - 2, pos_x + (max_x - min_x) - 2, ground_x, ground_y)
    return 0

y_max = len(lines)
x_max = len(lines[0])

for y, line in enumerate(lines):
    for x, value in enumerate(line):
        if (value == 0):
            total += trailhead_tester(lines, y, x, y_max, x_max)

print(total)