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-rw-r--r--stddev.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/stddev.cpp b/stddev.cpp
index 5920b6d..50d81f9 100644
--- a/stddev.cpp
+++ b/stddev.cpp
@@ -1,5 +1,6 @@
#include <iostream>
#include <vector>
+#include <algorithm>
#include <cmath>
#include <cctype>