LoopsTen

using System;
class Program
{
    static void Main()
    {
        string numbers = Console.ReadLine();
        string[] nums = numbers.Split(new char[] { ' ' });
        int sumOdd = 1;
        int sumEven = 1;

        for (int i = 1; i < nums.Length; i += 2 )
        {
            sumOdd *= i;
        }
        for (int i = 2; i < nums.Length; i+= 2)
        {
            sumEven *= i;
        }
        if ( sumOdd == sumEven)
        {
            Console.WriteLine("yes");
            Console.WriteLine("product = {0}", sumOdd);
        }
        else
        {
            Console.WriteLine("no");
            Console.WriteLine("odd product = {0}", sumOdd);
            Console.WriteLine("even product = {0}", sumEven);
        }
    }
}