From 1b8bfa0d4c0ef99da0a87bc7887fbaf3f97cbc97 Mon Sep 17 00:00:00 2001
From: ryuta-kw22 <ryuta.kawamura@togawa.cs.waseda.ac.jp>
Date: Fri, 3 Jul 2026 14:08:01 +0900
Subject: [PATCH] testing

---
 ryuta.c | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 ryuta.c

diff --git a/ryuta.c b/ryuta.c
new file mode 100644
index 0000000..73b0c46
--- /dev/null
+++ b/ryuta.c
@@ -0,0 +1,5 @@
+#include <stdio.h>
+
+int main(void) {
+    printf("hello, world!\n");
+}
\ No newline at end of file
-- 
2.22.0