From 234217e6cc653d39036d4258bb914410cebde806 Mon Sep 17 00:00:00 2001
From: Eric Mertens <emertens@gmail.com>
Date: Sun, 27 Nov 2022 11:54:47 -0800
Subject: [PATCH] fix reference to popped queue element

---
 2019/20.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/2019/20.cpp b/2019/20.cpp
index 5c0321f..ef2235b 100644
--- a/2019/20.cpp
+++ b/2019/20.cpp
@@ -128,7 +128,7 @@ auto SolveMaze(Distances const& distances, bool const recursive) -> std::int64_t
   todo.emplace(0, 0, "-AA");
 
   while(!todo.empty()) {
-    auto const& [steps, depth, name] = todo.top();
+    auto const [steps, depth, name] = std::move(todo.top());
     todo.pop();
     if (name == "-ZZ") { return steps; }
     if (seen.emplace(depth, name).second) {