#!/usr/bin/env python3
import re

INPUT_FILE = 'input'

cd_pattern = '^\$\scd (.*)$'
ls_pattern = '^\$ ls$'
dir_pattern = '^dir .*$'
file_pattern = '^(\d+) .*$'

def main():
    content = map(str.strip, open(INPUT_FILE, 'r').readlines())
    cwd = ['']
    folders = {}
    for line in content:
        if re.match(dir_pattern, line) or re.match(ls_pattern, line):
            # ignore `dir a` and `$ ls`
            continue
        cd = re.match(cd_pattern, line)
        if cd:
            new_dir = cd.group(1)
            if new_dir == '..':
                cwd.pop()
            else:
                cwd.append(new_dir)
                folders['/'.join(cwd)] = 0
            print('/'.join(cwd))
            continue
        file_match = re.match(file_pattern, line)
        if file_match:
            filesize = int(file_match.group(1))
            for n in range(len(cwd), 0, -1):
                try:
                    folders['/'.join(cwd[:n])] += filesize
                except KeyError:
                    continue

        else:
            print('ERROR: No regex matched for {}'.format(line()))
    print(folders)
    dir_sum = 0
    for key in folders.keys():
        if folders[key] <= 100000:
            dir_sum += folders[key]
            print(key, dir_sum)
    print(dir_sum) 



if __name__ == '__main__':
    main()