HW Mihaylov

import java.util.Scanner;

public class main {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int PreviousSum = 0;
        int CurrentSum = 0;
        int diff = 0;
        for (int i = 1; i <= n; i++) {
            if (i == 1) {
                int num1 = scan.nextInt();
                int num2 = scan.nextInt();
                PreviousSum = num1 + num2;
            } else {
                int num1 = scan.nextInt();
                int num2 = scan.nextInt();
                CurrentSum = num1 + num2;
                if (Math.abs(CurrentSum - PreviousSum) > diff) {
                    diff = Math.abs(CurrentSum - PreviousSum);
                }
                PreviousSum = CurrentSum;
            }
        }
        if (diff != 0) {
            System.out.println("No, maxdiff=" + diff);
        } else {
            System.out.println("Yes, value=" + PreviousSum);
        }
    }
}