import numpy as np

file = "inputs/day9.input"
numbers = [x.decode().replace("\n", "") for x in open(file, "rb").readlines()]
numbers = [[int(x) for x in number] for number in numbers]
numbers = np.array(numbers)

risklevel = 0

for x in range(numbers.shape[0]):
    for y in range(numbers.shape[1]):
        if x == 0 and y == 0:
            if numbers[x + 1, y] > numbers[x, y] and numbers[x, y + 1] > numbers[x, y]:
                risklevel += 1 + numbers[x, y]
        elif x == 0 and y == numbers.shape[1] - 1:
            if numbers[x + 1, y] > numbers[x, y] and numbers[x, y - 1] > numbers[x, y]:
                risklevel += 1 + numbers[x, y]
        elif x == numbers.shape[0] - 1 and y == 0:
            if numbers[x - 1, y] > numbers[x, y] and numbers[x, y + 1] > numbers[x, y]:
                risklevel += 1 + numbers[x, y]
        elif x == numbers.shape[0] - 1 and y == numbers.shape[1] - 1:
            if numbers[x - 1, y] > numbers[x, y] and numbers[x, y - 1] > numbers[x, y]:
                risklevel += 1 + numbers[x, y]
        elif x == 0 and y > 0 and y < numbers.shape[1] - 1:
            if (
                numbers[x, y + 1] > numbers[x, y]
                and numbers[x, y - 1] > numbers[x, y]
                and numbers[x + 1, y] > numbers[x, y]
            ):
                risklevel += 1 + numbers[x, y]
        elif x == numbers.shape[0] - 1 and y > 0 and y < numbers.shape[1] - 1:
            if (
                numbers[x, y + 1] > numbers[x, y]
                and numbers[x, y - 1] > numbers[x, y]
                and numbers[x - 1, y] > numbers[x, y]
            ):
                risklevel += 1 + numbers[x, y]
        elif y == 0 and x > 0 and x < numbers.shape[0] - 1:
            if (
                numbers[x, y + 1] > numbers[x, y]
                and numbers[x - 1, y] > numbers[x, y]
                and numbers[x + 1, y] > numbers[x, y]
            ):
                risklevel += 1 + numbers[x, y]
        elif y == numbers.shape[1] - 1 and x > 0 and x < numbers.shape[0] - 1:
            if (
                numbers[x, y - 1] > numbers[x, y]
                and numbers[x - 1, y] > numbers[x, y]
                and numbers[x + 1, y] > numbers[x, y]
            ):
                risklevel += 1 + numbers[x, y]
        else:
            if (
                numbers[x, y - 1] > numbers[x, y]
                and numbers[x, y + 1] > numbers[x, y]
                and numbers[x - 1, y] > numbers[x, y]
                and numbers[x + 1, y] > numbers[x, y]
            ):
                risklevel += 1 + numbers[x, y]

print(risklevel)