using System;

namespace _05.ChallengeTheWedding
{
    class ChallengeTheWedding
    {
        static void Main(string[] args)
        {
            int totalMen = int.Parse(Console.ReadLine());
            int totalWomen = int.Parse(Console.ReadLine());
            int maxTables = int.Parse(Console.ReadLine());

            int tablesCounter = 0;

            for (int menDating = 1; menDating <= totalMen; menDating++)
            {
                for (int womenDating = 1; womenDating <= totalWomen; womenDating++)
                {
                    tablesCounter++;

                    if (tablesCounter > maxTables)
                    {
                        break;
                    }

                    Console.Write($"({menDating} <-> {womenDating}) ");
                }
            }

        }
    }
}