typedef long long ll;
typedef long double ld;
#include <bits/stdc++.h>
using namespace std;
#define int long long

signed main(){
    ld a,b;
    std::cin >> a>>b;
    b = abs(b);
    if(a/b<b/a-0.0000000000000000001){
        std::cout << "Yes" << std::endl;
    }else{
        std::cout << "No" << std::endl;
    }
}