diff --git a/1.txt b/1.txt
deleted file mode 100644
index e5b91150901a7a5dbb5f6662e6b8c9cedf794b0f..0000000000000000000000000000000000000000
--- a/1.txt
+++ /dev/null
@@ -1 +0,0 @@
-hahahahahahaha
diff --git a/cyf.c b/cyf.c
new file mode 100644
index 0000000000000000000000000000000000000000..938db9243c4ba5ae14c3323cb2416e18d6d5c4ba
--- /dev/null
+++ b/cyf.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main(int argc, const char *argv[])
+{
+	printf("hello world\n");
+	return 0;
+}
diff --git a/liuqichao.c b/liuqichao.c
deleted file mode 100644
index 354499acd60e01f6d3b56ed83f0a8d077effb0f2..0000000000000000000000000000000000000000
--- a/liuqichao.c
+++ /dev/null
@@ -1 +0,0 @@
-#include<stdio.h>