package com.company;
import java.util.Scanner;
public class Main {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int N = input.nextInt();

        int oddProduct = 1;
        int evenProduct = 1;
        int [] rowData = new int[N];

        for (int i = 0; i <= rowData.length-1; i++) {
            rowData [i] = input.nextInt();
        }

        for (int i = 0; i < rowData.length; i+=2) {
            oddProduct *= rowData[i];
        }
        for (int i = 1; i < rowData.length; i+=2) {
            evenProduct *= rowData[i];
        }
        if (oddProduct==evenProduct){
            System.out.println("yes "+ oddProduct);
        }
        else{
            System.out.println("no "+oddProduct+" "+evenProduct);

        }
        }
    }