advent-of-code/solutions/1/python/main.py

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from typing import List
from itertools import product
from os.path import join, dirname
target = 2020
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data = join(dirname(__file__), '../data.txt')
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with open(data) as f:
numbers: List[int] = list(map(int, f.readlines()))
for a, b in product(numbers, numbers):
if a + b == target:
print(f'The numbers: {a} and {b}.\tSolution: {a*b}')
break
for a, b, c in product(numbers, numbers, numbers):
if a + b + c == target:
print(f'The numbers: {a}, {b} and {c}.\tSolution: {a*b*c}')
break