# include <iostream>
#include <stdio.h>
using namespace std;

int main()
{
freopen("tictactoe.in","r",stdin);
freopen("tictactoe.out","w",stdout);
int x,y;
cin>>x>>y;
if(x==1&&y==2)cout<<"No"<<endl;
if(x==2&&y==1)cout<<"No"<<endl;
if(x==2&&y==3)cout<<"No"<<endl;
if(x==3&&y==2)cout<<"No"<<endl;
if(x==2&&y==2)cout<<"Yes"<<endl;
if(x==1&&y==1)cout<<"No"<<endl;
if(x==1&&y==3)cout<<"No"<<endl;
if(x==3&&y==1)cout<<"No"<<endl;
if(x==3&&y==3)cout<<"No"<<endl;
return 0;
}