testNums

using System;

namespace TestNums
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int m = int.Parse(Console.ReadLine());
            int max = int.Parse(Console.ReadLine());

            int sum = 0;
            int counter = 0;


            for (int i = n; i >= 1 ; i--)
            {
                for (int j = 1; j <= m; j++)
                {
                    sum = sum + (3 * (j * i));
                    counter++;
                    if (sum >= max)
                    {
                        break;
                    }
                }
                if (sum>=max)
                {
                    break;
                }
            }
            if (sum>=max)
            {
                Console.WriteLine($"{counter} combinations\nSum: {sum} >= {max}");
            }
            else
            {
                Console.WriteLine($"{counter} combinations\nSum: {sum}");

            }

        }
    }
}