#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pll pair<ll,ll>
#define rep(i, n) for(ll i = 0; i < (ll)(n); i++)


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