#include <bits/stdc++.h>
using namespace std;
using ll = int64_t;
#define rep(i, s, e) for (int i = s; i < e; ++i)
#define sort_(a) stable_sort(a.begin(), a.end())
#define rsort(a) stable_sort(a.rbegin(), a.rend())
#define join(a, d) accumulate(a.begin() + 1, a.end(), a[0], [](string s, string t) { return s + d + t; })
constexpr ll sum(auto a) { return accumulate(a.begin(), a.end(), 0LL); }
constexpr double degrees(double a) { return a * 180.0 / M_PI; }
constexpr double radians(double a) { return (a * M_PI) / 180.0; }
constexpr long mod = 1e9 + 7;

int main(int, [[maybe_unused]] char *argv[]) {
#ifdef DEBUG
  freopen(argv[1], "r", stdin);
#endif

  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout << fixed << setprecision(15);

  int N, X;
  cin >> N >> X;
  if (N == 1 && X == 1)
    cout << "No\n";
  else
    cout << "Yes\n";

  return 0;
}