#include<iostream>
#include<iomanip>
using namespace std;
class gym{
    public:
    float ans;
    
    void get(string m ,int d ,float du){
        if(d<0 && du<<0){
            cout<<"Invalid input";
        }
        else{
            if(d == 1){
              if (m == "basic"){
                  ans = (30 * du ) - (6 * du)
                  cout<<fixed<<setprecision(2)<<ans;
              }  
              else if (m == "Standard"){
                  ans = (50 * du ) - (10 * du)
                  cout<<fixed<<setprecision(2)<<ans;
            }
            else if (m == "P"){
                  ans = (80 * du ) - (16 * du)
                  cout<<fixed<<setprecision(2)<<ans;
            }
            else{
                if (m == "basic"){
                  ans = (6 * du)
                  cout<<fixed<<setprecision(2)<<ans;
              }  
              else if (m == "Standard"){
                  ans = (10 * du)
                  cout<<fixed<<setprecision(2)<<ans;
            }
            else if (m == "P"){
                  ans = (16 * du)
                  cout<<fixed<<setprecision(2)<<ans;
            }
            }
        }
    }
};
int main(){
    string n ;
    int d;
    float du;
    gym obj ;
    obj.get(n,d,du);
}