#ifndef S0002_ADD_TWO_NUMBERS_HPP
#define S0002_ADD_TWO_NUMBERS_HPP

#include "structures.hpp"

class S0002 {
 public:
  /**
   * @brief Add Two Numbers
   *
   * You are given two **non-empty** linked lists representing two non-negative
   * integers. The digits are stored in **reverse order**, and each of their
   * nodes contains a single digit. Add the two numbers and return the sum as a
   * linked list.
   *
   * You may assume the two numbers do not contain any leading zero, except the
   * number 0 itself.
   *
   * @param l1 the first linked list
   * @param l2 the second linked list
   */
  ListNode* addTwoNumbers(ListNode* l1, ListNode* l2);
};

#endif