09. Sum of Two Numbers

using System;

namespace SumOfTwoNumbers
{
    class Program
    {
        static void Main(string[] args)
        {
            int firstNum = int.Parse(Console.ReadLine());
            int secondNum = int.Parse(Console.ReadLine());
            int magicNum = int.Parse(Console.ReadLine());
            int combinations = 0;
            bool isFound = false;

            for (int i = firstNum; i <= secondNum; i++)
            {
                for (int j = firstNum; j <= secondNum; j++)
                {
                    combinations++;
                    if (i + j == magicNum)
                    {
                        Console.WriteLine($"Combination N:{ combinations} ({ i} + { j} = { magicNum})");
                        isFound = true;
                        break;
                    }
                }
                if (isFound) {
                    break;
                }
            }
            if (isFound == false)
            {
                Console.WriteLine($"{ combinations} combinations - neither equals { magicNum}");
            }
        }
    }
}