#include "bits/stdc++.h"

using namespace std;

namespace lab3{
    struct TreeNode {
        int val;
        TreeNode *left;
        TreeNode *right;
        TreeNode() : val(0), left(nullptr), right(nullptr) {}
        TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}
        TreeNode(int x, TreeNode *left, TreeNode *right) : val(x), left(left), right(right) {}
    };
    void Add(TreeNode *&tree, int x) {
        if (tree == nullptr)
            tree = new TreeNode(x);
        else
            if (tree->val < x)
                Add(tree->right, x);
            else
                Add(tree->left, x);
    }

}

#ifndef ALGORITHMS_LAB3_H
#define ALGORITHMS_LAB3_H

#endif //ALGORITHMS_LAB3_H