commit 144b3b2bcd89b7ae8ad1b8fe8d22ffb0fadb77b3 · kot.pink/aoc

+48

6.py

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       import sys

     

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       from operator import mul, add

     

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       from functools import reduce

     

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       total_wordwise = 0

     

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       total_digitwise = 0

     

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       file = '6.input' if len(sys.argv) <= 1 else sys.argv[1]

     

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       columns = []

     

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       ops = []

     

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       op_line = None

     

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       for line in open(file).readlines():

     

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           line = line.strip('\n')

     

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           for word in line.split(' '):

     

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               if not word: continue

     

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               if word in '+*':

     

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                   ops.append(word)

     

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                   op_line = line

     

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               else:

     

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                   columns.append(word)

     

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       for op_i, op in enumerate(ops):

     

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           column = [int(c) for i, c in enumerate(columns) if i % len(ops) == op_i]

     

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           if op == '+':

     

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               total_wordwise += sum(column)

     

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           elif op == '*':

     

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               total_wordwise += reduce(mul, column, 1)

     

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       print(f'p1: {total_wordwise}')

     

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       lines = []

     

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       op_pos = [i for i, ch in enumerate(op_line) if ch in '+*']

     

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       for line in open(file).readlines():

     

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           if line.strip() == op_line.strip(): break

     

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           words = [line[i:j][:-1] for i, j in zip([0] + op_pos[1:], op_pos[1:] + [None])]

     

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           lines.append(words)

     

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       for op_i, op in enumerate(ops):

     

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           cols = [line[i] for i in range(len(lines[0])) if i % len(ops) == op_i for line in lines]

     

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           digits = [col[i] for i in range(len(cols[0])) for col in cols]

     

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           numbers = [int(''.join(digits[i:i+len(cols)])) for i in range(0, len(digits), len(cols))]

     

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           if op == '+':

     

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               total_digitwise += sum(numbers)

     

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           elif op == '*':

     

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               total_digitwise += reduce(mul, numbers, 1)

     

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       print(f'p2: {total_digitwise}')

6.test

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       123 328  51 64 

     

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        45 64  387 23 

     

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         6 98  215 314

     

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       *   +   *   +