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

namespace Application
{
	class MainClass
	{
		public static void Main (string[] args)
		{
			new MainClass ().Calc ();
		}

		public MainClass ()
		{
		}

		public void Calc ()
		{
			var scan = new Scanner ();
			var A = scan.NextToken ();
			var B = scan.NextToken ();

			var va = new Version (A);
			var vb = new Version (B);

			Console.WriteLine ((va.CompareTo (vb) >= 0) ? "YES" : "NO");
		}

		void WriteLine (object o)
		{
			System.Console.WriteLine (o.ToString ());
		}

		void WriteEnum<T> (IEnumerable<T> l)
		{
			WriteLine (JoinList (l));
		}

		string JoinList<T> (IEnumerable<T> l)
		{
			return string.Join (" ", l.Select (x => x.ToString ()).ToArray ());
		}
	}

	class Scanner
	{
		public int[] NextDigits (int count)
		{
			return Enumerable.Range (0, count)
                .Select (x => NextDigit ()).ToArray ();
		}

		public string NextToken ()
		{
			int i;
			var r = new List<char> ();

			while ((i = System.Console.Read()) >= 0) {
				var c = Convert.ToChar (i);

				if (IsSpace (c) && r.Count > 0)
					break;

				r.Add (c);
			}

			return new string (r.ToArray ());
		}

		bool IsSpace (char c)
		{
			if (char.IsWhiteSpace (c))
				return true;

			return false;
		}

		public int NextDigit ()
		{
			var token = NextToken ();

			return int.Parse (token);
		}
	}

	class Reader
	{
		public string Item ()
		{
			return Items () [0];
		}

		public String[] Items ()
		{
			return this.Items (' ');
		}

		public String[] Items (char c)
		{
			return System.Console.ReadLine ().Split (c);
		}

		public int Int ()
		{
			return Ints (' ') [0];
		}

		public int[] Ints ()
		{
			return this.Ints (' ');
		}

		public int[] Ints (char c)
		{
			return Items (c).Select (x => int.Parse (x)).ToArray ();
		}
	}
}