#include <bits/stdc++.h>
using namespace std;

const int dx[] = {1,1,2,2,-2,-2,-1,-1,0};
const int dy[] = {-2,2,-1,1,-1,1,-2,2,0};	

int main(){
	long long int x,y;
	cin >> x >> y;
	for(int i = 0; i < 9; i++){
		for(int j = 0; j < 9; j++){
			for(int k = 0; k < 9; k++){
				int xx = dx[i] + dx[j] + dx[k];
				int yy = dy[i] + dy[j] + dy[k];
				if(x == xx and y == yy){
					cout << "YES" << endl;
					return 0;
				}
			}
		}
	}
	cout << "NO" << endl;
	return 0;
}