#include <iostream>
#include <cstdint>

using namespace std;

int main()
{
	cin.tie(nullptr);
	ios::sync_with_stdio(false);

	uint32_t N, M, K;
	cin >> N >> M >> K;

	if (M + K <= N) cout << "Yes\n";
	else cout << "No\n";

	return 0;
}