TestNumbers

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

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            int firstNum = int.Parse(Console.ReadLine());
            int secondNum = int.Parse(Console.ReadLine());
            int max = int.Parse(Console.ReadLine());

            int result = 0;
            int counter = 0;
            for (int i = firstNum; i >= 1; i--)
            {
                for (int j = 1; j <= secondNum; j++)
                {
                    counter++;
                    result = result + ((i * j) * 3);
                    if (result >= max)
                    {
                        break;
                    }
                }
                if (result >= max)
                {
                    break;
                }
            }

            if (result >= max)
            {
                Console.WriteLine($"{counter} combinations");
                Console.WriteLine($"Sum: {result} >= {max}");
            }
            else
            {
                Console.WriteLine($"{counter} combinations");
                Console.WriteLine($"Sum: {result}");
            }
        }
    }
}