// #pragma GCC target "prefer-vector-width=512"
// #pragma GCC optimize "Ofast"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define rep(i,N) for(int i=0;i<(int)N;i++)
#define rrep(i,s,e) for(int i=s;i<(int)e;i++)
#define all(x) x.begin(),x.end()
#define vecin(N,A) rep(i,N) cin>>A[i]
#define vvecin(H,W,A) rep(i,H) rep(j,W) cin>>A[i][j]
int main(){
    int A,B;cin>>A>>B;
    if(A*2<B||A>2*B)cout<<"No"<<endl;
    else cout<<"Yes"<<endl;
}