Cruise Ship

function cruiseShip(input) {
    let destination = input[0];
    let cabinType = input[1];
    let overnights = Number(input[2]);

    let dayPrice = 0;

    if (destination == "Mediterranean") {
        if (cabinType == "standard cabin") {
            dayPrice = 27.50;
        } else if (cabinType == "cabin with balcony") {
            dayPrice = 30.20;
        } else {
            dayPrice = 40.50;
        }
    } else if (destination == "Adriatic") {
        if (cabinType == "standard cabin") {
            dayPrice = 22.99;
        } else if (cabinType == "cabin with balcony") {
            dayPrice = 25.00;
        } else {
            dayPrice = 34.99;
        }
    } else {
        if (cabinType == "standard cabin") {
            dayPrice = 23.00;
        } else if (cabinType == "cabin with balcony") {
            dayPrice = 26.60;
        } else {
            dayPrice = 39.80;
        }
    }

    let totalSum = dayPrice * 4 * overnights;
    if (overnights > 7) {
        totalSum *= 0.75;
    }

    console.log(`Annie\'s holiday in the ${destination} sea costs ${totalSum.toFixed(2)} lv.`);
    return;
}

РЕШЕНИЕ С ТЕРНАРЕН ОПЕРАТОР:

function cruiseShip(input) {
    let destination = input[0];
    let cabinType = input[1];
    let overnights = Number(input[2]);

    let dayPrice =
        destination == "Mediterranean" ?
            (cabinType == "standard cabin" ? 27.50 : cabinType == "cabin with balcony" ? 30.20 : 40.50) :
            destination == "Adriatic" ?
                (cabinType == "standard cabin" ? 22.99 : cabinType == "cabin with balcony" ? 25.00 : 34.99) :
                (cabinType == "standard cabin" ? 23.00 : cabinType == "cabin with balcony" ? 26.60 : 39.80);

    let totalSum = dayPrice * 4 * overnights * (overnights > 7 ? 0.75 : 1);

    console.log(`Annie\'s holiday in the ${destination} sea costs ${totalSum.toFixed(2)} lv.`);
    return;
}