04. Sum of Two Numbers

int startNum = int.Parse(Console.ReadLine());
int finalNum = int.Parse(Console.ReadLine());

int magicNum = int.Parse(Console.ReadLine());
int count = 0;

bool isFound = false;

for (int x = startNum; x <= finalNum; x++)
{
    for (int y = startNum; y <= finalNum; y++)
    {
        int sum = x + y;
        count++;

        if (sum == magicNum)
        {
            Console.WriteLine($"Combination N:{count} ({x} + {y} = {magicNum})");
            isFound = true;
            break;
        }
    }

    if (isFound ) { break; }
}

if (!isFound)
{
    Console.WriteLine($"{count} combinations - neither equals {magicNum}");
}