using System;
using System.Collections;
using System.Collections.Generic;
 
class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		
		bool chk=true;
		for(int i=0;i<3;i++){
			if(Koreha[i]>Kaseki[i]){
				chk=false;
				break;
			}
			if(Koreha[i]<Kaseki[i]){
				chk=true;
				break;
			}
		}
		Console.WriteLine(chk?"YES":"NO");
		
		
	}
	int[] Kaseki;
	int[] Koreha;
	public Sol(){
		Kaseki=Array.ConvertAll(Console.ReadLine().Split('.'),e=>int.Parse(e));
		Koreha=Array.ConvertAll(Console.ReadLine().Split('.'),e=>int.Parse(e));
	}




	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(){return Console.ReadLine().Split(' ');}
	static int[] ria(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>int.Parse(e));}
	static long[] rla(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>long.Parse(e));}
	static double[] rda(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>double.Parse(e));}
}