using System;

class Coin{
    static void Main(){
        short a,b,c;
        string[] str=Console.ReadLine().Split(' ');
        a=str[0];
        b=str[1];
        c=str[2];
        if(a+b>=c){
            Console.WriteLine("Yes");
        }else
        {
            Console.WriteLine("No")
        }
    }
}