#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define mt make_tuple
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
#define pb push_back
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

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

int X, Y;
bool ok;

void f(int y, int x, int k) {
    if(y == Y&&x == X) {
        ok = true;
        return;
    }
    if(k == 3)return;
    rep(i, 8) {
        f(y + DY[i], x + DX[i], k + 1);
    }
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);

    while(cin >> X >> Y) {
        ok = false;
        f(0, 0, 0);
        cout << (ok ? "YES" : "NO") << endl;
    }
}