using System;

namespace _6666.ChallengingTheWedding
{
    class Program
    {
        static void Main(string[] args)
        {
            int numMales = int.Parse(Console.ReadLine());
            int numFemales = int.Parse(Console.ReadLine());
            int maxTables = int.Parse(Console.ReadLine());
            int freeTables = maxTables;

            if (numMales >= 1 && numMales <= 100 && numFemales >= 1 && numFemales <= 100 && maxTables >= 1 && maxTables <= 100)
            {



                for (int i = 1; i <= numMales; i++)
                {
                    for (int j = 1; j <= numFemales; j++)
                    {
                        Console.Write("({0} <-> {1}) ", i, j);
                        freeTables--;
                        if (freeTables <= 0)
                        {
                            break;
                        }
                    }
                }

            }

        }
    }
}