#include "bits/stdc++.h"

using namespace std;
using ll = long long;
const double pi = acos(-1);
#define FOR(i,a,b) for (ll i=(a),__last_##i=(b);i<__last_##i;i++)
#define RFOR(i,a,b) for (ll i=(b)-1,__last_##i=(a);i>=__last_##i;i--)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) RFOR(i,0,n)
#define __GET_MACRO3(_1, _2, _3, NAME, ...) NAME
#define rep(...) __GET_MACRO3(__VA_ARGS__, FOR, REP)(__VA_ARGS__)
#define rrep(...) __GET_MACRO3(__VA_ARGS__, RFOR, RREP)(__VA_ARGS__)
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v) {
	REP(i, v.size()) { if (i)os << " "; os << v[i]; }return os;
}
template<typename T> ostream& operator<<(ostream& os, const vector<vector<T>>& v) {
	REP(i, v.size()) { if (i)os << endl; os << v[i]; }return os;
}

const ll INF = 1LL << 60;
ll MOD = 1000000007;
ll _MOD = 1000000009;
double EPS = 1e-10;

#define int long long

inline void my_io() {

	std::ios::sync_with_stdio(false);

	std::cin.tie(0);

	cout << fixed << setprecision(16);

	//cout << setprecision(10) << scientific << ans << endl;
}

signed main() {
	ll x, y;

	cin >> x >> y;

	vector<pair<ll, ll>> v;

	v.push_back(make_pair(0, 0));

	vector<pair<ll, ll>> d(8);
	d[0] = make_pair(-2, -1);
	d[1] = make_pair(-2, 1);
	d[2] = make_pair(-1, -2);
	d[3] = make_pair(-1, 2);
	d[4] = make_pair(1, -2);
	d[5] = make_pair(1, 2);
	d[6] = make_pair(2, -1);
	d[7] = make_pair(2, 1);

	REP(i, 3) {
		REP(j, v.size()) {
			REP(k, 8) {
				v.push_back(make_pair(v[j].first + d[k].first, v[j].second + d[k].second));
			}
		}
	}

	REP(i, v.size()) {
		if (v[i].first == x && v[i].second == y) {
			cout << "YES" << endl;
			return 0;
		}
	}

	cout << "NO" << endl;
}