OddOrEvenProduct

import java.util.Scanner;

public class OddOrEvenProduct {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Scanner scan = new Scanner(System.in);
        int n = Integer.parseInt(scan.nextLine());
        String x = scan.nextLine();
        String[] input = x.split(" ");
        int[] array = new int[input.length];
        int evenProduct = 1;
        int oddProduct = 1;

        for (int i = 0; i < n ; i++) {
            array[i] = Integer.parseInt(input[i]);
            if (i % 2 == 0) {
                evenProduct *= array[i];
            } else {
                oddProduct *= array[i];
            }
        }
        if (evenProduct == oddProduct) {
            System.out.printf("yes %d", evenProduct);
        }    else {
            System.out.printf("no %d %d", evenProduct , oddProduct);
        }
    }
}