using System;
using System.Collections.Generic;

class yukicoder
{
    static void Main(string[] args)
    {
            var r = new Reader();
            var A = r.next();
            var B = r.next();
            var list = new List<char>();
            foreach ( var c in B )
                list.Add(c);
            foreach(var c in A )
            {
                if ( list.Contains(c) )
                {
                    list.Remove(c);
                } else
                {
                    Console.WriteLine("NO");
                    return;
                }
            }
            Console.WriteLine("YES");
    }
}

class Reader
{
    string[] s;
    int i;
    char[] cs = new char[] { ' ' };

    public Reader()
    {
        s = new string[0];
        i = 0;
    }

    public string next()
    {
        if ( i < s.Length )
            return s[i++];
        var input = Console.ReadLine();
        while ( input == "" )
            input = Console.ReadLine();
        s = input.Split(cs, StringSplitOptions.RemoveEmptyEntries);
        i = 0;
        return next();
    }
}