using System;

public class Hello
{
    public static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var n = int.Parse(line[0]);
        var m = int.Parse(line[1]);
        var x = int.Parse(line[2]);
        var a = n - m;
        Console.WriteLine(x - a >= 3 ? "YES" : "NO");
    }
}