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-rw-r--r--pngdetail.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/pngdetail.cpp b/pngdetail.cpp
index a5465bf..d62b6dd 100644
--- a/pngdetail.cpp
+++ b/pngdetail.cpp
@@ -49,6 +49,7 @@ everything except huge output:
#include <iostream>
#include <iomanip>
#include <sstream>
+#include <algorithm>
struct Options
{