diff --git a/src/util.h b/src/util.h
index f80419d..1456762 100644
--- a/src/util.h
+++ b/src/util.h
@@ -4,4 +4,7 @@
 #include <numeric>
 #include <string>
 #include <tuple>
-#include <iostream>
\ No newline at end of file
+#include <iostream>
+
+using std::stoi, std::to_string;
+using std::cout, std::endl;
\ No newline at end of file