Progblem 06 - Sum of Two Numbers

//URL FOR THE TASK: https://judge.softuni.bg/Contests/Practice/Index/480#5


#include <iostream>

using namespace std;

int main()
{
    int start;
    int end;
    int magic_num;

    cin >> start >> end >> magic_num;

    int counter = 0;
    int sum = 0;

    for (int i = start; i <= end; ++i)
    {
        for (int j = start; j <= end; ++j)
        {
            sum = i + j;
            counter++;
            if (sum == magic_num)
            {
                cout << "Combination N:"
                    << counter
                    << " ("
                    << i
                    << " + "
                    << j
                    << " = "
                    << magic_num
                    << ")" << endl;
                break;

            }
        }
        if (sum == magic_num)
        {
            break;
        }
    }
    if (sum != magic_num)
    {
        cout << counter
        << " combinations - neither equals "
        << magic_num << endl;
    }

    return 0;
}