#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  int A,B;
  cin>>A>>B;
  if(A >= 6) cout<<"Yes"<<endl;
  else if(A == 1) cout<<"No"<<endl;
  else if(A >= B) cout<<"Yes"<<endl;
  else cout<<"No"<<endl;
}