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

namespace yukicoderTest
{
    class Program
    {
        static void Main(string[] args)
        {
            string N = Console.ReadLine();
            string X = Console.ReadLine();
            string[] verstr = N.Split('.');
            string[] judgestr = X.Split('.');
            int[] ver = new int[verstr.Length];
            int[] judge = new int[judgestr.Length];
            bool flg = false;
            for(int i=0;i<verstr.Length;i++)
            {
                ver[i] = int.Parse(verstr[i]);
                judge[i] = int.Parse(judgestr[i]);
            }
            if(ver[0]>=judge[0])
            {
                if(ver[1] >= judge[1])
                {
                    if(ver[2] >= judge[2])
                    {
                        flg = true;
                    }
                }
            }
            if(flg==true)
            {
                Console.WriteLine("YES");
            }
            else
            {
                Console.WriteLine("NO");
            }
            
        }

    }
}