#include <iostream>
#include<string>
using namespace std;

int main()
{
    int stayOfDays;
    cin >> stayOfDays;
    string type, mark;
    cin >> type >> mark;
    double price = 0.0;
    


    if (type == "room for one person") {
        if (stayOfDays <= 10 && stayOfDays <= 15 && stayOfDays > 15) {
            price = stayOfDays * 18;
        }
    }
    else if (type == "apartment") {
        if (stayOfDays <= 10) {
            price = stayOfDays * 25 * 0.7;

        }
        else if (stayOfDays <= 15) {
            price = stayOfDays * 25 * 0.65;

        }
        else if (stayOfDays > 15) {
            price = stayOfDays * 25 * 0.5;

        }
    }
    else if (type == "president apartment") {
        if (stayOfDays <= 10) {
            price = stayOfDays * 35 * 0.9;

        }
        else if (stayOfDays <= 15) {
            price = stayOfDays * 35 * 0.85;
        }
        else if (stayOfDays > 15) {
            price = stayOfDays * 35 * 0.8;

        }
    }
    if (mark == "positive") {
       price *= 1.25;
    }
    else if (mark == "negative") {
        price *= 0.9;
    }

    cout << price << endl;

    return 0;
}