#include <iostream>
#include <set>
using namespace std;

set<pair<int,int>> s = {{-6,-3},{-6,-1},{-6,1},{-6,3},{-5,-4},{-5,-2},{-5,0},{-5,2},{-5,4},{-4,-5},{-4,-3},{-4,-2},{-4,-1},{-4,0},{-4,1},{-4,2},{-4,3},{-4,5},{-3,-6},{-3,-4},{-3,-3},{-3,-2},{-3,-1},{-3,0},{-3,1},{-3,2},{-3,3},{-3,4},{-3,6},{-2,-5},{-2,-4},{-2,-3},{-2,-1},{-2,0},{-2,1},{-2,3},{-2,4},{-2,5},{-1,-6},{-1,-4},{-1,-3},{-1,-2},{-1,-1},{-1,0},{-1,1},{-1,2},{-1,3},{-1,4},{-1,6},{0,-5},{0,-4},{0,-3},{0,-2},{0,-1},{0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{1,-6},{1,-4},{1,-3},{1,-2},{1,-1},{1,0},{1,1},{1,2},{1,3},{1,4},{1,6},{2,-5},{2,-4},{2,-3},{2,-1},{2,0},{2,1},{2,3},{2,4},{2,5},{3,-6},{3,-4},{3,-3},{3,-2},{3,-1},{3,0},{3,1},{3,2},{3,3},{3,4},{3,6},{4,-5},{4,-3},{4,-2},{4,-1},{4,0},{4,1},{4,2},{4,3},{4,5},{5,-4},{5,-2},{5,0},{5,2},{5,4},{6,-3},{6,-1},{6,1},{6,3}};

int main(){
  int x, y;
  cin >> x >> y;
  if(s.count(make_pair(x,y))){
    cout << "YES" << endl;
  } else {
    cout << "NO" << endl;
  }
  return 0;
}