#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include <iostream>
namespace man {
constexpr inline std::string yes(const bool b) noexcept {
	return b ? "Yes" : "No";
}
}
int main() {
	std::cin.tie(nullptr) -> sync_with_stdio(false);
	int n, m, k;
	std::cin >> n >> m >> k;
	std::cout << man::yes(n >= m + k) << '\n';
}