using System.Numerics;

public class Program
{
    public static void Main()
    {

        //int num = int.Parse(Console.ReadLine() ?? string.Empty);
        string[] str = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        //string str = Console.ReadLine() ?? string.Empty;


        //BigInteger n = BigInteger.Parse(str[0]);
        //BigInteger s = BigInteger.Parse(str[1]);

        //BigInteger a = s / 2;



        BigInteger n = BigInteger.Parse(str[0]);
        BigInteger m = BigInteger.Parse(str[1]);
        BigInteger k = BigInteger.Parse(str[2]);

        if (n >= m + k)
        {
            Console.WriteLine("Yes");
        }
        else
        {
            Console.WriteLine("No");
        }

    }

}