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

namespace Exam_Challenge_the_Wedding
{
    class Program
    {
        static void Main(string[] args)
        {
            int countMen = int.Parse(Console.ReadLine());
            int countWomen = int.Parse(Console.ReadLine());
            int countTables = int.Parse(Console.ReadLine());

            for (int i = 1; countTables > 0 && i <= countMen; i++)
            {
                for (int j = 1; countTables > 0 && j <= countWomen; j++, countTables--)
                {
                    {
                        Console.Write($"({i} <-> {j}) ");
                    }
                }
            }
        }

    }
}