24 lines
500 B
Python
24 lines
500 B
Python
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#!/usr/bin/env python
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# 2024 - Advent Of Code 1 - part 2
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# file = 'input_example.txt'
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file = 'input.txt'
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firsts = []
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seconds = {}
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accum = 0
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with open(file, encoding="utf-8") as f:
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for line in f.readlines():
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a, b, c, d = line.strip().split(' ')
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firsts.append(int(a))
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if int(d) in seconds:
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seconds[int(d)] += 1
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else:
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seconds[int(d)] = 1
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for num in firsts:
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if num in seconds:
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accum += num * seconds[num]
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print(f"sum: {accum}")
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