diff --git a/cyh.java b/cyh.java
new file mode 100644
index 0000000..e4987e3
--- /dev/null
+++ b/cyh.java
@@ -0,0 +1,2 @@
+1111
+  
\ No newline at end of file
diff --git a/cyh.java~ b/cyh.java~
new file mode 100644
index 0000000..e69de29
diff --git a/cyh0925.java b/cyh0925.java
deleted file mode 100644
index 7284ab4..0000000
--- a/cyh0925.java
+++ /dev/null
@@ -1 +0,0 @@
-aaaa
\ No newline at end of file
diff --git a/v1.java b/v1.java
deleted file mode 100644
index 7284ab4..0000000
--- a/v1.java
+++ /dev/null
@@ -1 +0,0 @@
-aaaa
\ No newline at end of file
diff --git a/v2.java b/v2.java
deleted file mode 100644
index 6484fb6..0000000
--- a/v2.java
+++ /dev/null
@@ -1 +0,0 @@
-bbbb
\ No newline at end of file
diff --git a/v3.java b/v3.java
deleted file mode 100644
index baebf33..0000000
--- a/v3.java
+++ /dev/null
@@ -1 +0,0 @@
-cccc
\ No newline at end of file