#include <iostream>

using namespace std;

struct TreeNode {
    int val;
    TreeNode *left;
    TreeNode *right;
    TreeNode() {}
    TreeNode(int value) : val(value) {}
};

struct NewTreeNode : public TreeNode {
    int father;
};

int main() {
    NewTreeNode newTreeNode;
    newTreeNode.father = -1;
    newTreeNode.val = -2;
    cout << newTreeNode.father << ", " << newTreeNode.val << endl;
}