04. Sum of Two Numbers

import java.util.Scanner;
class Demo {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int starIndex = Integer.parseInt(scan.nextLine());
        int endIndex = Integer.parseInt(scan.nextLine());
        int magicalNum = Integer.parseInt(scan.nextLine());
        int counter = 0;
        int firstNum = 0;
        int secondNum = 0;
        boolean hasMagicalNum = false;
        for (firstNum = starIndex; firstNum <= endIndex; firstNum++) {
            for (secondNum = starIndex; secondNum <= endIndex; secondNum++) {
                counter++;
                if (firstNum + secondNum == magicalNum) {
                    hasMagicalNum = true;
                    break;
                }
            }
            if (hasMagicalNum) {
                break;
            }
        }
        if (hasMagicalNum) {
            System.out.printf("Combination N:%d (%d + %d = %d)",
                    counter, firstNum, secondNum, magicalNum);
        }else {
            System.out.printf("%d combinations - neither equals %d",
                    counter, magicalNum);
        }
    }
}