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;
}
//Input: l1 = [2,4,3]. l2 = [5,6,4]
//Output: [7,0,8]
//Explanation: 342 + 465 = 807.
//result: [7,0,8]
public class Solution
public static ListNode AddTwoNumbers(ListNode l1, ListNode l2)
public static void Main()