EqualWords

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Equal_Words
{
    class Program
    {
        static void Main(string[] args)
        {

            string a = Console.ReadLine();
            string b = Console.ReadLine();


            if (a.ToLower() == b.ToLower() )
            {
                Console.WriteLine("yes");
            }

            else Console.WriteLine("no");

        }
    }
}