EqualPairs

import java.util.Scanner;

public class EqualPairs1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt(scanner.nextLine());
        int sum = 0;
        int diff = 0;

        for (int i = 1; i <= n; i++) {
            int num1 = Integer.parseInt(scanner.nextLine());
            int num2 = Integer.parseInt(scanner.nextLine());
            int lastSum = num1 + num2;

            if (i > 1) {
                diff = Math.abs(sum - lastSum);
            }
            sum = lastSum;
        }
        if(diff == 0){
            System.out.println("Yes, value=" + sum);
        } else {
            System.out.println("No, maxdiff=" + diff);
        }

    }
}