#include <bits/stdc++.h>
//#include<atcoder/all>
using namespace std;
//using namespace atcoder;
using ll = long long;
const ll mod = 1000000007;
//const ll mod = 998244353;
int dx[4] = { 0,1,0,-1 }, dy[4] = { -1,0,1,0 };
ll n, m, k;
int main() {
	cin >> n >> m >> k;
	if (n >= m + k)cout << "Yes" << endl;
	else cout << "No" << endl;
}