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

class Program
{
    static void Main(string[] args)
    {
        int[] ver = Console.ReadLine().Split('.').Select(a => int.Parse(a)).ToArray();
        int[] judge = Console.ReadLine().Split('.').Select(a => int.Parse(a)).ToArray();
        bool b = true;

        if (ver[0] < judge[0])
        {
            b = false;
        }
        else
        {
            if (ver[1] < judge[1])
            {
                b = false;
            }
            else
            {
                if (ver[2] < judge[2])
                {
                    b = false;
                }
            }
        }

        if (b == true)
        {
            Console.WriteLine("YES");
        }
        else
        {
            Console.WriteLine("NO");
        }
    }
}