#include <iostream>
using namespace std;

class Node
{
    int data;
    Node *next = nullptr;

public:
    Node(int data1) : data(data1) { }

    friend ostream& operator<<(ostream &os, const Node &node)
    {
        os << node.data;
        return os;
    }
};

int main()
{
    int arr[] = {1, 2, 3, 4, 5, 6};
    Node *rootNode = new Node(arr[0]);
    cout << *rootNode;
    delete rootNode;
    return 0;
}