From ba0fe6268fbef974163daf33c6f43fde013ba3b5 Mon Sep 17 00:00:00 2001
From: Kelvin Sherlock <ksherlock@gmail.com>
Date: Fri, 5 Aug 2016 22:35:52 -0400
Subject: [PATCH] headers

---
 environment.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/environment.cpp b/environment.cpp
index 43e39ba..3c367fe 100644
--- a/environment.cpp
+++ b/environment.cpp
@@ -2,6 +2,8 @@
 #include <cstdio>
 #include <cstdarg>
 
+#include <algorithm>
+
 #include "error.h"
 
 namespace {