# IDEAS(dev):
#  - You might not have to determine all the positions if the numbers to decode don't use them
#     e.g. while(number to decode NOT IN numbers decodable) { do everything }
#  -

# NOTES(dev):
#  - It looks like the codes are NOT always printed in the same order.  For example, if one shows up
#     as 'cg', it might also later show up as 'gc' in the same line.
#   0:      1:      2:      3:      4:

#  aaaa    ....    aaaa    aaaa    ....
# b    c  .    c  .    c  .    c  b    c
# b    c  .    c  .    c  .    c  b    c
#  ....    ....    dddd    dddd    dddd
# e    f  .    f  e    .  .    f  .    f
# e    f  .    f  e    .  .    f  .    f
#  gggg    ....    gggg    gggg    ....

#   5:      6:      7:      8:      9:
#  aaaa    aaaa    aaaa    aaaa    aaaa
# b    .  b    .  .    c  b    c  b    c
# b    .  b    .  .    c  b    c  b    c
#  dddd    dddd    ....    dddd    dddd
# .    f  e    f  .    f  e    f  .    f
# .    f  e    f  .    f  e    f  .    f
#  gggg    gggg    ....    gggg    gggg

# initialize shared data:
possibilities = {}
all_possibilities = [ 'a', 'b', 'c', 'd', 'e', 'f', 'g' ]

# functions:
def ResetData():
    possibilities.clear()
    for letter in all_possibilities:
        possibilities[letter] = list(all_possibilities)

def ParsePossibilities(text):
    text_len = len(text)
    if(text_len == 2):
        good_letters = [ text[0], text[1] ]
        print(good_letters)

        # first, get rid of the good letters from all the other positions
        for letter in ['a', 'b', 'd', 'e', 'g']: # all the positions not used by #1
            for to_remove in good_letters:
                possibilities[letter].remove(to_remove)

        # second, get rid of the other letters from the positions used by #1
        for letter in ['c', 'f']:
            to_remove_list = []
            for l in possibilities[letter]:
                if(not (l in good_letters)):
                    to_remove_list.append(l)
            for to_remove in to_remove_list:
                possibilities[letter].remove(to_remove)

total = 0
with open('example_data', 'r') as fp:
    # NOTE(dev): We assume all lines are the same length
    for line in fp:
        ResetData()
        split_line = line.split(' | ')
        data = split_line[0].split()
        print(data)
        codes = split_line[1]
        for val in codes.split():
            if(len(val) in [2, 3, 4, 7]):
                total += 1

        for text in data:
            ParsePossibilities(text.strip())

        asdf = possibilities.items()
        asdf = list(asdf)
        asdf.sort()
        print(asdf)

# part 1 answer:
print(total)



# # DEBUG(dev):
# print(possibilities)