01. Match Tickets

function matchTickets(input) {
    let budget = Number(input[0]);
    let category = input[1];
    let people = Number(input[2]);

    if (people <= 4) {
        budget *= 0.25;
    } else if (people <= 9) {
        budget *= 0.4;
    } else if (people <= 24) {
        budget *= 0.5;
    } else if (people < 50) {
        budget *= 0.6;
    } else {
        budget *= 0.75;
    }

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

    if (budget >= 0) {
        console.log(`Yes! You have ${budget.toFixed(2)} leva left.`);
    } else {
        console.log(`Not enough money! You need ${Math.abs(budget).toFixed(2)} leva.`);
    }
}

Решение с тернарен оператор:

function matchTickets(input) {
    let budget = Number(input[0]);
    let category = input[1];
    let people = Number(input[2]);

    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;

    console.log(budget >= 0 ? `Yes! You have ${budget.toFixed(2)} leva left.`
        : `Not enough money! You need ${Math.abs(budget).toFixed(2)} leva.`);
}