TestNumbers

using System;

namespace TestNumbers
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int m = int.Parse(Console.ReadLine());
            int boundary = int.Parse(Console.ReadLine());
            int multiplier = 3, product = 1, result = 1, totalSum = 0, counter = 0;

            for (int i = n; i >= 1; i--)
            {
                for (int j = 1; j <= m; j++)
                {
                    if (totalSum >= boundary)
                    {
                        break;
                    }
                    product = i * j;
                    result = multiplier * product;
                    totalSum += result;
                    counter++;
                }
            }
            if (totalSum >= boundary)
            {
                Console.WriteLine($"{counter} combinations");
                Console.WriteLine($"Sum: {totalSum} >= {boundary}");
            }
            else
            {
                Console.WriteLine($"{counter} combinations");
                Console.WriteLine($"Sum: {totalSum}");
            }
        }
    }
}