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Improve solution for day 1 using combinations

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Gabriel Augendre 2020-12-01 09:41:23 +01:00
parent c52fe0aa76
commit 0841f8fba6
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1 changed files with 14 additions and 9 deletions
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2020/day01-expense.py
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@ -1,18 +1,23 @@
from itertools import combinations
from math import prod
def main(): def main():
lines = [] lines = []
with open("inputs/day01") as f: with open("inputs/day01") as f:
for line in f: for line in f:
lines.append(int(line.strip())) lines.append(int(line.strip()))
stop = len(lines) res = solve(lines, 2)
for i, value in enumerate(lines): print("result is", res)
for j in range(i+1, stop): res = solve(lines, 3)
other = lines[j] print("result is", res)
for k in range(j+1, stop):
third = lines[k]
addition = other + value + third def solve(expense_report, fix_number):
if addition == 2020: for combination in combinations(expense_report, fix_number):
print("result is", other * value * third) if sum(combination) == 2020:
return prod(combination)
if __name__ == '__main__': if __name__ == '__main__':