#include <iostream>
#include <cmath>
using namespace std;
int main() {
    int x,y,z;
    cin>>x>>y>>z;
    if(y<=0||y>315||y>=x||x>1800||z>=1000||z<=100){
        cout<<"Wrong Data"<<endl;
    } else {
        cout<<"Yes"<<endl;
        int blood3=x-floor(0.33*z);
        int blood4=x-floor(0.5*z);
        int blood5=x-z;
        if (blood3<=0){
            cout<<"Great"<<endl;
        } 
		else if (blood4<=0) {
            cout<<"Eh.."<<endl;
            cout<<"OK"<<endl;
        } 
		else if(blood5<=0){
            cout<<"Oh.."<<endl;
            cout<<"Yes, If he can get 5-star."<<endl;
        } 
		else {
            cout<<"No"<<endl;
            cout<<blood4<<endl;
        }
    }
    return 0;
}