package probaproba;

import java.util.Scanner;

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

        int n = Integer.parseInt(in.nextLine());

        long odd = 1;
        long even = 1;
        for (int i = 1; i <= n; i++) {
            long nums = in.nextInt();
            if(i%2!=0){
                odd *= nums;
            }
            else{
                even *= nums;
            }

        }
       if(odd == even){
           System.out.printf("yes %d",odd);
       }
        else{
           System.out.printf("no %d %d",odd,even);
       }

    }
}