From d00e5678b3096bc7888c421b85a5f262ec7f3557 Mon Sep 17 00:00:00 2001
From: Matthew Gretton-Dann <matt@gretton-dann.org.uk>
Date: Thu, 9 Dec 2021 13:55:37 +0000
Subject: [PATCH] Include <numeric>

Fixes Linux build failures.
---
 2016/puzzle-20-01.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/2016/puzzle-20-01.cc b/2016/puzzle-20-01.cc
index 0e6afc0..bde8d56 100644
--- a/2016/puzzle-20-01.cc
+++ b/2016/puzzle-20-01.cc
@@ -1,4 +1,5 @@
 #include <iostream>
+#include <numeric>
 #include <regex>
 #include <string>
 
@@ -84,4 +85,4 @@ auto main() -> int
 
   std::cout << "First available IP address: " << ranges.inverse().lowest() << '\n';
   return 0;
-}
\ No newline at end of file
+}