diff --git a/src/U206625/U206625_failed.cpp b/src/U206625/U206625_failed.cpp
index efbe5d2..98db8e5 100644
--- a/src/U206625/U206625_failed.cpp
+++ b/src/U206625/U206625_failed.cpp
@@ -1,7 +1,6 @@
 #include <iostream>
 #include <string>
 #include <stack>
-#include <cmath>
 #include <array>
 
 using std::cin, std::cout, std::string, std::stack, std::array;