import os

cwd = os.path.dirname(os.path.abspath(__file__))

file_name = 'advent2023_p1.txt'
# file_name = 'test.txt'
advent = os.path.join(cwd, file_name)

nums = []
values = []

with open(advent, 'r') as file:
    for line in file:
        for digit in line:
            if digit.isdigit():
                nums.append(digit)
        if len(nums) < 2:
            num_one = nums[0]
            num_two = num_one
            num_join = num_one + num_two
            values.append(int(num_join))
        else:    
            num_one = nums[0]
            num_two = nums[-1]
            num_join = num_one + num_two
            values.append(int(num_join))
        nums.clear()
        # print(values)
    print(sum(values))
file.close()