#include<iostream>
using namespace std;
 
int main()
{
	int a,b,c;
    cin >> a >> b >> c;
    if(a + b <= c)
    {
    	cout << "No" << endl;
    }
    else
    {
    	cout << "Yes" << endl;
    }
    return 0;
}
#include<iostream>
using namespace std;
 
int main()
{
	int a,b,c;
    cin >> a >> b >> c;
    if(a + b >= c)
    {
    	cout << "Yes" << endl;
    }
    else
    {
    	cout << "No" << endl;
    }
    return 0;
}