diff --git a/main.cpp b/main.cpp
index a321c2bc8c50f4b244b5989b04da699d07609251..a37e60d7a7e119b90ee95c9f3ca09697ff4e4066 100644
--- a/main.cpp
+++ b/main.cpp
@@ -8,6 +8,6 @@ int main()
     std::cout << "2023/12/01" << endl;
     std::cout << "2023/12/01-2" << endl;
     std::cout << "2023/12/05-2" << endl;
-    std::cout << "2024/02/04-3"<< endl;
+    std::cout << "2024/02/04-4"<< endl;
     return 0;
 }