using System;

​

public class Program

{

    public static void Main()

    {

        var first = int.Parse(Console.ReadLine());

        var second = int.Parse(Console.ReadLine());

        var stop = int.Parse(Console.ReadLine());

        //

        var total =0;

        var multyPlay =0;

        var count =0;

        var check = true;

        for(int i = first; i >=1; i--)

        {

            for(int ii =1; ii <= second; ii++)

            {               

                if(!(total <= stop))

                {

                    check = false;

                    break;

                }               

                multyPlay = i * ii;

                multyPlay*=3;

                total +=multyPlay;

                count++;

            }

        }

        Console.WriteLine(count+" combinations");

        if(check)

        {

            Console.WriteLine("Sum: {0}",total);

        }

        else    

        {           

            Console.WriteLine("Sum: {0} >= {1}", total, stop);

        }

    }

}