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 input = Console.ReadLine(); string input2 = Console.ReadLine(); string[] A0str = input.Split('.'); string[] A1str = input2.Split('.'); int[] A0 = new int[A0str.Length]; int[] A1 = new int[A1str.Length]; int cnt = 0; for (int i = 0; i < A0.Length; i++) { A0[i] = int.Parse(A0str[i]); A1[i] = int.Parse(A1str[i]); if(A0[i]>=A1[i]) { cnt++; } else { Console.WriteLine("NO"); break; } } if(cnt==3) { Console.WriteLine("YES"); } } } }