Update buildcpp.py

Author: HONGJICAI

buildcpp.py

@@ -34,6 +34,28 @@
  TreeLinkNode *left, *right, *next;
  TreeLinkNode(int x) : val(x), left(NULL), right(NULL), next(NULL) {}
 };
+class Employee {
+public:
+    // It's the unique ID of each node.
+    // unique id of this employee
+    int id;
+    // the importance value of this employee
+    int importance;
+    // the id of direct subordinates
+    vector<int> subordinates;
+};
+class Node {
+public:
+    int val;
+    vector<Node*> children;
+
+    Node() {}
+
+    Node(int _val, vector<Node*> _children) {
+        val = _val;
+        children = _children;
+    }
+};
 '''
     with open(cpp) as f:
         code += f.read()