day7_take2.py

import sys

# Read the input from the command line argument
with open(sys.argv[1], "r") as file:
    # Read the input as a list of strings
    grid = file.read().strip().split("\n")

# Convert the strings to a list of lists of integers
grid = [[int(ch) for ch in row] for row in grid]

# Get the number of rows and columns in the grid
num_rows = len(grid)
num_cols = len(grid[0])

# Initialize the number of visible trees to 0
num_visible = 0

# Loop through each row and column of the grid
for i in range(num_rows):
    for j in range(num_cols):
        # Get the height of the current tree
        height = grid[i][j]

        # Check if the tree is on the edge of the grid
        is_on_edge = i == 0 or i == num_rows - 1 or j == 0 or j == num_cols - 1

        # Check if the tree is visible from the left
        if (j == 0 or height > grid[i][j - 1]) and not is_on_edge:
            num_visible += 1
        
        # Check if the tree is visible from the right
        if (j == num_cols - 1 or height > grid[i][j + 1]) and not is_on_edge:
            num_visible += 1
        
        # Check if the tree is visible from the top
        if (i == 0 or height > grid[i - 1][j]) and not is_on_edge:
            num_visible += 1
        
        # Check if the tree is visible from the bottom
        if (i == num_rows - 1 or height > grid[i + 1][j]) and not is_on_edge:
            num_visible += 1

# Print the number of visible trees
print(num_visible)