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

namespace Problem_12.Test_Numbers
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int m = int.Parse(Console.ReadLine());
            int maxSumBoundary = Math.Abs(int.Parse(Console.ReadLine()));

            int sum = 0;
            int totalSum = sum;
            int totalCombinations = 0;

            for (int i = n; i >= 1; i--)
            {
                for (int j = 1; j <= m; j++)
                {
                    sum = i * j * 3;
                    totalSum += sum;
                    totalCombinations++;
                    if (totalSum >= maxSumBoundary)
                    {
                        Console.WriteLine($"{totalCombinations} combinations");
                        Console.WriteLine($"Sum: {totalSum} >= {maxSumBoundary}");
                        return;
                    }
                }
            }
            Console.WriteLine($"{totalCombinations} combinations");
            Console.WriteLine($"Sum: {totalSum}");
        }
    }
}