#include<iostream>
#include<string>
#include<iomanip>
using namespace std;
int main()
{
    string mem;
    int dis;
    float dur,cost,x;
    cin>>member>>dis>>dur;
    if(member=="Basic")
    {cost=(dur*30);
        if(dis==1)
        {
        x=cost-(cost*20)/100;
        cout<<fixed<<setprecision(2)<<x;
        }
        else if(dis==0)
        {
            cout<<fixed<<setprecision(2)<<cost;
        }
        else
        {cout<<"Invalid input";}
    }
        else if(member=="Standard")
    {
        cost=(dur*50);
      if(dis==1)
      {
          x=cost-(cost*20)/100;
          cout<<fixed<<setprecision(2)<<x;
      }
      else if(dis==0)
      {
          cout<<fixed<<setprecision(2)<<cost;
      }
        else
        {cout<<"Innvalid input";}
    }
        else if(member=="Premium");
    {
        cost=(dur*80);
        if(dis==1){
        x=cost-(cost*20)/100;
        cout<<fixed<<setprecision(2)<<x;
        }
        else if(dis==0)
        {
            cout<<fixed<<setprecision(2)<<cost;
        }
        else{
            cout<<"Invalid input"}
    )
    else{
        cout<<"Invalid input";}
        }
    }
      
    }
}