import numpy as np

file = "inputs/day5.input"
numbers = open(file, "rb").readlines()
numbers = [x.decode().replace("\n", "").split(" ") for x in numbers]
start_x = [int(x[0].split(",")[0]) for x in numbers]
end_x = [int(x[2].split(",")[0]) for x in numbers]
start_y = [int(x[0].split(",")[1]) for x in numbers]
end_y = [int(x[2].split(",")[1]) for x in numbers]
max_val = max(max(end_x), max(end_y))

vents = np.zeros((max_val + 1, max_val + 1))

for i in range(len(start_x)):
    if start_x[i] == end_x[i]:
        if start_y[i] < end_y[i]:
            start = start_y[i]
            end = end_y[i]
        else:
            start = end_y[i]
            end = start_y[i]
        vents[start_x[i], start : end + 1] += 1
    if start_y[i] == end_y[i]:
        if start_x[i] < end_x[i]:
            start = start_x[i]
            end = end_x[i]
        else:
            start = end_x[i]
            end = start_x[i]
        vents[start : end + 1, start_y[i]] += 1

print(len(vents[vents >= 2]))