02. Transport Price

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

int main()
{
    string one_day_or_night;
    double kilometers, price;
    cin >> kilometers >> one_day_or_night;

    double taxi_input_charge = 0.70;
    double taxi_day_charge = 0.79;
    double taxi_night_charge = 0.90;
    double bus_charge = 0.09;
    double train_charge = 0.06;

    if (kilometers >= 100)
    {
        if (one_day_or_night == "day" || one_day_or_night == "night")
        {
            price = kilometers * train_charge;
        }
    }
    else if (kilometers >= 20)
    {
        if (one_day_or_night == "day" || one_day_or_night == "night")
        {
            price = kilometers * bus_charge;
        }
    }
    else if (kilometers < 20)
    {
        if (one_day_or_night == "day")
        {
            price = taxi_input_charge + kilometers * taxi_day_charge;
        }
        else if (one_day_or_night == "night")
        {
            price = taxi_input_charge + kilometers * taxi_night_charge;
        }
    }
    cout << fixed << setprecision(2) << price << endl;

    return 0;
}