From 11c9119dc59582870f2f01537b22b01f7592cc71 Mon Sep 17 00:00:00 2001
From: Matthew Gretton-Dann <matt@gretton-dann.org.uk>
Date: Thu, 16 Dec 2021 10:39:51 +0000
Subject: [PATCH] Fix 2021-16-01 build for Linux

---
 2021/puzzle-16-01.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/2021/puzzle-16-01.cc b/2021/puzzle-16-01.cc
index cc3f592..72ac0cd 100644
--- a/2021/puzzle-16-01.cc
+++ b/2021/puzzle-16-01.cc
@@ -1,3 +1,4 @@
+#include <cassert>
 #include <iostream>
 #include <string>
 #include <vector>