using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace challangeTheWedding
{
    class Program
    {
        static void Main(string[] args)
        {
            int men = int.Parse(Console.ReadLine());
            int women = int.Parse(Console.ReadLine());
            int tables = int.Parse(Console.ReadLine());
            int countertables = 0;
            for(int a = 1; a <= men; a++)
            {
                for (int b = 1; b <= women; b++)
                {
                    Console.Write($"({a} <-> { b}) ");
                    countertables++;
                    if (countertables == tables)
                    {
                        break;
                    }
                }
            }



        }
    }
}