using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        if (c[0] < 1989 || (c[0] == 1989 && c[1] == 1 && c[2] < 8))
        {
            WriteLine("No");
            return;
        }
        if (c[0] > 2019 || (c[0] == 2019 && c[1] > 4))
        {
            WriteLine("No");
            return;
        }
        WriteLine("Yes");
    }
}