diff --git a/main.cpp b/main.cpp
index 27232a3cb52bdbe1fb5f1b2df6e18444df7ddb14..1ebe03b6ae19a50fe1f3ae80a4d390f1a03c3c59 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 << "2024/01/31-18"<< endl;
+    std::cout << "2024/01/31-19"<< endl;
     return 0;
 }