// editor1
#include<iostream>
using namespace std;
class Journey{
    public:
    double d,s;
    Journey(double s,double d):d(d),s(s) {}
    int time() {
        return d/s;
    }
};
class CarJourney:public Journey{
    public:
    CarJourney(double d,double s):Journey(d,s)
    
};
class BikeJourney:public Journey{
    public:
    BikeJourney(double d,double s):Journey(d,s)
    
};
class TrainJourney:public Journey{
    public:
TrainJourney(double d,double s):Journey(d,s)
    
};
int main(){
    string type;
    double d,s;
    cin>>type>>d>>s;;
    if (type=="Car") cout<<CarJourney(d,s).time();
    if (type=="Bike")cout<<BikeJourney(d,s).time();
    if (type=="Train")cout<<TrainJourney(d,s).time();
    return 0;
    
}