#include <bits/stdc++.h>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-6;
const ll mod=1e9+7;
const int dx[4]={0,1,0,-1},dy[4]={1,0,-1,0};

const int DX[8]={-2,-2,-1,1,2,2,1,-1},DY[8]={-1,1,2,2,1,-1,-2,-2};
int x,y;

bool dfs(int x,int y,int t){
	if(x==0&&y==0) return 1;
	if(t==0) return 0;
	bool B=0;
	for(int i=0;i<8;i++){
		int X=x+DX[i],Y=y+DY[i];
		B|=dfs(X,Y,t-1);
	}
	return B;
}

int main(){
	cin>>x>>y;
	cout<<(dfs(x,y,3)?"YES":"NO")<<endl;
}