# initialise variables
forest = []
visible = 0

# read input file
with open("adventofcode2022/day8/day8input.txt", "r") as file:
    for line in file:
        treeline = line.strip()
        forest.append([*treeline])
    forest = [list(map(int, x)) for x in forest]

    # transpose forest for easier parsing
    forest2 = list(zip(*forest))

# count how many trees are visible
for i in range(len(forest[0])):
    for j in range(len(forest)):
        tree = forest[i][j]
        if (
            all(x < tree for x in forest[i][0:j])
            or all(x < tree for x in forest[i][j + 1 :])
            or all(x < tree for x in forest2[j][0:i])
            or all(x < tree for x in forest2[j][i + 1 :])
        ):
            visible += 1

# print answer
print(visible)