#include <bits/stdc++.h>
using namespace std;
template <typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val) {
  std::fill((T *)array, (T *)(array + N), val);
}
struct edge {
  int to, cost;
};
int A, B, C, N, W, H, ans, dp[10000][10000];
string S;
static const int dx[8] = {0, 1, 1, 1, 0, -1, -1, -1},
                 dy[8] = {1, 1, 0, -1, -1, -1, 0, 1};
void solve() {}
void debug() {}
void answer() { cout << ans << "\n"; }
int main() {
  cin >> A >> B;
  if (A + B >= C)
    cout << "Yes\n";
  else
    cout << "No\n";
  solve();
  debug();
  return 0;
}
