using System;

​

public class ListNode

{

    public int val;

    public ListNode next;

    public ListNode(int val = 0, ListNode next = null)

    {

        this.val = val;

        this.next = next;

    }

}

​

public class Program

{

    public static void Main()

    {

        var solution = new Solution();

        var list1 = new ListNode(2, new ListNode(4, new ListNode(3, null)));

        var list2 = new ListNode(5, new ListNode(6, new ListNode(4, null)));

        var result = solution.AddTwoNumbers(list1, list2);

        // Output should be (8 (0 (7 null) ) ) but i cbf

    }

}

​

public class Solution

{

    public ListNode AddTwoNumbers(ListNode l1, ListNode l2)

    {

    }

}