From: Ben Harris <bjh21@bjh21.me.uk>
Date: Tue, 28 May 2024 08:26:34 +0000 (+0100)
Subject: 19a even faster
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~bjharris/git?a=commitdiff_plain;h=aef961f2aac9a33290b1cf329298a2d9d7e5b290;p=aoc-2022.git

19a even faster

Merging the two "is it worth it?" checks.
---

diff --git a/19/19a.bqn b/19/19a.bqn
index d7f05cb..4a60aa3 100644
--- a/19/19a.bqn
+++ b/19/19a.bqn
@@ -28,7 +28,7 @@ EvalBlueprint←{𝕊 robot_costs:
       needed←(𝕩⊏robot_costs)-stock
       needed_time←1+0⌈⌈´⌈NtZ needed÷robots
       # Build a robot if there's time and we might need it.
-      (needed_time≤time)∧(𝕩⊑stock<max_costs×time)∧(𝕩⊑robots<max_costs) ?
+      (needed_time≤time)∧(𝕩⊑(stock+robots×time)<max_costs×time) ?
       Search ⟨time-needed_time
        (stock+robots×needed_time)-𝕩⊏robot_costs
        (1⊸+)⌾(𝕩⊸⊑)robots⟩;