using System;
using System.Collections.Generic;
using System.Linq;

public class Program {
    public static int CalculateMoveCount(int distance, int speed) {
        int r;
        var q = Math.DivRem( Math.Abs( distance ), speed, out r );
        return r == 0 ? q : q + 1;
    }
    public static string Solver(System.IO.TextReader reader) {
        string a = reader.ReadLine();
        string b = reader.ReadLine();
        bool isSame = true;
        for(var i = 0; i != b.Length; ++i) {
            var n=a.IndexOf( b.ElementAt( i ) );
            if (n == -1) {
                isSame = false;
                break;
            } else {
                a=a.Remove( n, 1 );
            }
        }
        return isSame?"YES":"NO";
    }

    private static void Main() {
        Console.WriteLine( Solver( Console.In ));
    }
}