#include <bits/stdc++.h>
#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using ll = long long;
using namespace std;

int main()
{
    ll a, b;
    cin >> a >> b;
    if (abs(a)> 2 && abs(b) > 2){
        cout <<((abs(a) < abs(b)) ? "Yes" : "No") << endl;
    } else cout <<((a*a < b*b) ? "Yes" : "No") << endl;
}