#include <bits/stdc++.h>
using ll = long long;
using ull = unsigned long long;
using namespace std;
void YesNo(bool b) { cout << (b ? "Yes" : "No") << endl; }
void YESNO(bool b) { cout << (b ? "YES" : "NO") << endl; }
signed main() {
  long long a, b, c;
  YesNo(a + b >= c);
}
