01. Match Tickets

#include <iostream>

using namespace std;

int main() {
    double budget;
    cin >> budget;

    string category;
    cin >> category;

    int people;
    cin >> people;

    if (people <= 4) {
        budget *= 0.25;
    }
    else if (people <= 9) {
        budget *= 0.4;
    }
    else if (people <= 24) {
        budget /= 2;
    }
    else if (people < 50) {
        budget *= 0.6;
    }
    else {
        budget *= 0.75;
    }

    if (category == "VIP") {
        budget -= 499.99 * people;
    }
    else {
        budget -= 249.99 * people;
    }

    cout.setf(ios::fixed);
    cout.precision(2);

    if (budget >= 0) {
        cout << "Yes! You have " << budget << " leva left." << endl;
    }
    else {
        cout << "Not enough money! You need " << abs(budget) << " leva." << endl;
    }

    return 0;
}

Решение с тернарен оператор :

#include <iostream>

using namespace std;

int main() {
    double budget;
    cin >> budget;

    string category;
    cin >> category;

    int people;
    cin >> people;

    budget *=
        people <= 4 ? 0.25 :
        people <= 9 ? 0.4 :
        people <= 24 ? 0.5 :
        people < 50 ? 0.6 : 0.75;

    budget -= (category == "VIP" ? 499.99 : 249.99) * people;

    cout.setf(ios::fixed);
    cout.precision(2);

    budget >= 0 ?
        cout << "Yes! You have " << budget << " leva left." << endl :
        cout << "Not enough money! You need " << abs(budget) << " leva." << endl;

    return 0;
}