import java.util.Scanner;

public class p12_EqualPairs {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int doubles = Integer.parseInt(scan.nextLine());
        int sum = 0;
        int lastSum = 0;
        int counter = 0;
        int maxDifference = 1;


        for (int i = 1; i <= doubles; i++) {
            int a = Integer.parseInt(scan.nextLine());
            int b = Integer.parseInt(scan.nextLine());
            sum = a + b;
            if (sum == lastSum) {
                counter++;
            }
            if (maxDifference < Math.abs(lastSum - sum) && i >= 2) {
                maxDifference = (Math.abs(lastSum - sum));
            }
            if (sum != lastSum) {
                lastSum = sum;
            }
        }
        if (counter == doubles - 1) {
            System.out.println("Yes, value=" + sum);
        } else {
            System.out.println("No, maxdiff=" + maxDifference);
        }
    }
}