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

namespace Two_Numbers_Sum
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int m = int.Parse(Console.ReadLine());
            int y = int.Parse(Console.ReadLine());
            int counter = 0;
            int j1 = 0;
            int i1 = 0;
            int countr = 0;
            for (int i = n; i >= m; i--)
            {
                for (int j = n; j >= m; j--)
                {
                    if (i1 + j1 == y)
                    {
                        break;
                    }
                    countr++;
                    if (i + j ==y)
                    {
                        i1 = i;
                        j1 = j;
                        break;
                    }
                    else
                    {
                        counter++;
                    }
                }
            }
            if (i1 + j1 == y)
            {
                Console.WriteLine("Combination N:{0} ({1} + {2} = {3})", countr,i1, j1, y);
            }
            else
            {
                Console.WriteLine("{0} combinations - neither equals {1}", counter, y);
            }

        }
    }
}