#include <iostream>
using namespace std;
#include<string>
int main(){
    string studentname;
    int ca,ch;
   { cin>> studentname;
    cin>>ca;
    cin>>ch;}
    int a;
   { a=ca/ch;
    cout<< "a%%"<<a;}
    if(a>=75%){
        cout<<"Yes";
    }
    
 
    
}