#include<iostream>
#include<iomanip>
#include<vector>
#include<math.h>
#include<algorithm>
#include<map>
#include<queue>
#include<stack>
#include<deque>
#include<set>
#include<cmath>
#include<ctime>
#include<bitset>
#define rep(i,a,b) for(int i=a;i<=b;i++)
using namespace std;
using ll = long long;
using vec = vector<ll>;
using Graph = vector<vec>;
using Pair = pair<ll,ll>;

void debug1(vec v){
    for(auto x:v)cout << x << ' ';
    cout << endl;
}
void debug2(vector<Pair> v){
    for(auto x:v)cout << '(' << x.first << ',' << x.second << ')' << endl;
}
void debug3(Graph v){
    rep(i,0,v.size()-1)debug1(v[i]);
    cout << endl;
}
int main(){
    ll a,b;
    cin >> a >> b;
    if(a > 2*b || b > 2*a)cout << "No";
    else cout << "Yes";
}