diff options
| -rw-r--r-- | 16.py | 24 |
1 files changed, 24 insertions, 0 deletions
@@ -2,6 +2,7 @@ from utils import open_day from functools import cache from dataclasses import dataclass from itertools import count, chain +from concurrent import futures import re @dataclass @@ -73,3 +74,26 @@ def solve(nodes, open_valves=1, time_left=30): v, p = solve(nodes) print(v, [extern(s) for s in p]) + +with futures.ProcessPoolExecutor(max_workers=5) as executor: + seen = set() + perms = 2 ** len(nodes) + def solve2(nodes, a, b): + return solve(nodes, a, 26), solve(nodes, b, 26) + futs = [] + for i in range(perms): + a = i | 1 + b = (i ^ (perms - 1)) | 1 + if a in seen or b in seen: continue + seen.add(a) + seen.add(b) + futs.append(executor.submit(solve2, nodes, a, b)) + best = (0, None, None) + for future in futures.as_completed(futs): + av, bv = future.result() + total = av[0] + bv[0] + if total > best[0]: + best = total, av[1], bv[1] + +v, p1, p2 = best +print(v, [extern(s) for s in p1], [extern(s) for s in p2]) |