#include <iostream>

int judge(int A,int B){
    if(!(A*2<B || A > B*2)){
        return 0;
    }
    else return 1;
}

int main(){
    int a,b;
    std::cin >> a >> b;
    switch(judge(a,b)){
        case 0 : std::cout << "Yes"; break;
        case 1 : std::cout << "No"; break;
    }
}