#include <iostream> #include <algorithm> #include <vector> #include <string> #include <map> #include <set> #include <fstream> #include <cmath> #include <stack> #include <queue> #include <iomanip> using namespace std; int main(){ long long a,b;cin>>a>>b; if(abs(a)<abs(b)) cout << "Yes"<<endl; else cout << "No" <<endl; }