using System;
using System.Linq;

namespace No69_1{
    public class Program{
        public static void Main(string[] args){
            var a = Console.ReadLine().ToList();
            a.Sort();
            var b = Console.ReadLine().ToList();
            b.Sort();

            Console.WriteLine(a.SequenceEqual(b) ? "YES" : "NO");
        }
    }
}