ProgBasicsJavaBook5.1Loops12EqualPairs

import java.util.Scanner;

public class E12EqualPairs {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt(scanner.nextLine());
        int number1 = 0;
        int number2 = 0;
        int sum1 = 0;
        int sum2 = 0;
        int max = 0;
        for (int i = 0; i < n; i++) {
            if (i % 2 == 0) {
                number1 = Integer.parseInt(scanner.nextLine());
                number2 = Integer.parseInt(scanner.nextLine());
                sum1 = number1 + number2;
            } else {
                number1 = Integer.parseInt(scanner.nextLine());
                number2 = Integer.parseInt(scanner.nextLine());
                sum2 = number1 + number2;
            }

            if (i > 0) { //minala e purva i vtora iteraciq
                if (sum2 != sum1) {
                    if (Math.abs(sum2 - sum1) > max) {
                        max = Math.abs(sum1 - sum2);
                    }
                }
            }
        }
        if (max == 0) {
            System.out.println("Yes, value=" + sum1);
        } else {
            System.out.println("No, maxdiff=" + max);
        }
    }
}