#ifndef S0021_MERGE_TWO_SORTED_LISTS_HPP
#define S0021_MERGE_TWO_SORTED_LISTS_HPP

#include <limits>

#include "structures.hpp"

using namespace std;

class S0021 {
 public:
  ListNode* mergeTwoLists(ListNode* list1, ListNode* list2);
};

#endif