Travel Agency

#include <iostream>
#include <string>

using namespace std;

int main() {
    string town, pack, vip;
    cin >> town >> pack >> vip;

    int days;
    cin >> days;

    if (days > 7) {
        days--;
    }

    double dayPrice = 0;

    if (town == "Bansko" || town == "Borovets") {
        if (pack == "withEquipment") {
            dayPrice = 100;
            if (vip == "yes") {
                dayPrice *= 0.90;
            }
        }
        else if (pack == "noEquipment") {
            dayPrice = 80;
            if (vip == "yes") {
                dayPrice *= 0.95;
            }
        }
    }
    else if (town == "Varna" || town == "Burgas") {
        if (pack == "withBreakfast") {
            dayPrice = 130;
            if (vip == "yes") {
                dayPrice *= 0.88;
            }
        }
        else if (pack == "noBreakfast") {
            dayPrice = 100;
            if (vip == "yes") {
                dayPrice *= 0.93;
            }
        }
    }

    if (days < 1) {
        cout << "Days must be positive number!\n";
    }
    else if (dayPrice > 0) {
        printf("The price is %.2flv! Have a nice time!", dayPrice * days);
    }
    else  {
        cout << "Invalid input!\n";
    }

    return 0;
}

Решение с тернарен оператор:

#include <iostream>
#include <string>

using namespace std;

int main() {
    string town, pack, vip;
    cin >> town >> pack >> vip;

    int days;
    cin >> days;

    if (days > 7) {
        days--;
    }

    double dayPrice =
        town == "Bansko" || town == "Borovets" ?
        (pack == "withEquipment" ? 100 * (vip == "yes" ? 0.90 : 1) : pack == "noEquipment" ? 80 * (vip == "yes" ? 0.95 : 1) : 0) :
        town == "Varna" || town == "Burgas" ?
        (pack == "withBreakfast" ? 130 * (vip == "yes" ? 0.88 : 1) : pack == "noBreakfast" ? 100 * (vip == "yes" ? 0.93 : 1) : 0) : 0;

    days < 1 ? printf("Days must be positive number!\n") :
        dayPrice > 0 ? printf("The price is %.2flv! Have a nice time!", dayPrice * days) :
        printf("Invalid input!\n");

    return 0;
}