27 lines
1.1 KiB
Python
27 lines
1.1 KiB
Python
input = open("input.txt").read().splitlines()
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# line = current line that is being searched
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# start = at what index to start searching
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# for the first digit: 0
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# for the second digit: right after the index of the first digit
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# is_first_digit = boolean, True if first digit is being found, False if second digit is being found
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# num_to_find = (next) number to search for in the string (line), starts at 9 decreases when not found
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def find_biggest_num_index(line, start, is_first_digit):
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index = -1
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num_to_find = 9
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while True:
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index = line.find(str(num_to_find), start)
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# decrease num_to_find if number is not found
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# OR we are currently searching for the first digit and the number found is the last char in the string
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if index == -1 or (is_first_digit and index == len(line) - 1):
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num_to_find -= 1
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else:
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return index
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answer = 0
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for line in input:
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first_digit_index = find_biggest_num_index(line, 0, True)
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second_digit_index = find_biggest_num_index(line, first_digit_index + 1, False)
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answer += int(line[first_digit_index] + line[second_digit_index])
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print(answer) |