feat: add quiz 3 cross-checker.

2025-05-19 21:56:26 +08:00
parent a4624b477f
commit 3bfb4dde2e
9 changed files with 163 additions and 2 deletions
--- a/counter/include/counter.h
+++ b/counter/include/counter.h
@@ -1,3 +1,4 @@
+#pragma once
 #include <string>
 #include <unordered_map>