--- a/src/llrb/llrbContext.h	Tue Apr 28 04:31:19 2015 +0900
+++ b/src/llrb/llrbContext.h	Tue Apr 28 14:34:59 2015 +0900
@@ -3,9 +3,11 @@
 enum Code {
     Code1,
     Code2,
+    Code3,
     Allocate,
     Put,
-    Insert,
+    InsertD,
+    InsertU,
     Exit,
 };
 
@@ -25,10 +27,12 @@
 };
 
 union Data {
+    long count;
     struct Node {
         int key;
         int value;
         enum Color color;
+        union Data* parent;
         union Data* left;
         union Data* right;
     } node;