For Loop Exercise Equal Pairs

import java.util.Scanner;

public class equalPairs {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int couplesCount=Integer.parseInt(scanner.nextLine());

        int num1=Integer.parseInt(scanner.nextLine());
        int num2=Integer.parseInt(scanner.nextLine());
        int previousSum=num1+num2;
        int maxDiff=0;

        for (int i=2;i<=couplesCount; i++){
            num1=Integer.parseInt(scanner.nextLine());
            num2=Integer.parseInt(scanner.nextLine());
            int currentSum=num1+num2;
            if (currentSum != previousSum ){
                maxDiff=Math.abs(currentSum-previousSum);
                previousSum=currentSum;
            }
        }

        if (maxDiff==0){
            System.out.printf("Yes, value=%d",previousSum);
        }else{
            System.out.printf("No, maxdiff=%d",maxDiff);
        }

    }
}