#include<iostream>
#include<iomanip>
using namespace std;
int main(){
    string name;
    int attended,held;
    getline(cin,name);
    cin>>attended;
    cin>>held;
    if(attended<0){
        cout<<"Invalid input";
    }
    if(held<=0){
        cout<<"Invalid input";
        
    }
    if(attended>held){
        cout<<"Invalid input";
    }
    double percentage=(double)attended/held*100;
    cout<<"fixed"<<setprecision(2)<<percentage<<"%"<<endl;
    if(percentage>=75){
        cout<<"Yes";
        
    }
    else{
        cout<<"No";
        return 0;
    
}