#include<iostream>
using namespace std;
int main()
{
  int x,y;
  cin >> x >> y;

  if ( x >= 0  &&  y >= 0  && y <= 6 - x &&  y >= 4 - 2*x ) 
	{
	  cout << "YES";
	  return 0;
	}
  cout << "NO";
  return 0;
}