function tourAgency(input) {
    let town = input[0];
    let packetType = input[1];
    let isVip = input[2];
    let daySpent = Number(input[3]);

    let priceForADay = 0;
    let finalPrice = 0;

    let isValid = true;

    if (daySpent < 1) {
        console.log("Days must be positive number!");
        isValid = false;
    }

    switch (town) {
        case "Bansko":
        case "Borovets":
            switch (packetType) {
                case "noEquipment":
                    if (isVip === "yes") {
                        priceForADay = 80 * 0.95;
                    } else {
                        priceForADay = 80;
                    }
                    break;
                case "withEquipment":
                    if (isVip === "yes") {
                        priceForADay = 100 * 0.9;
                    } else {
                        priceForADay = 100;
                    }
                    break;
                default:
                    console.log("Invalid input!");
                    isValid = false;
            }
            break;
        case "Varna":
        case "Burgas":
            switch (packetType) {
                case "withBreakfast":
                    if (isVip === "yes") {
                        priceForADay = 130 * 0.88;
                    } else {
                        priceForADay = 130;
                    }
                    break;
                case "noBreakfast":
                    if (isVip === "yes") {
                        priceForADay = 100 * 0.93;
                    } else {
                        priceForADay = 100;
                    }
                    break;
                default:
                    console.log("Invalid input!");
                    isValid = false;
            }
            break;
        default:
            console.log("Invalid input!");
            isValid = false;
    }

    if (isValid) {
        finalPrice = priceForADay * daySpent;
        console.log(
            `The price is ${finalPrice.toFixed(2)}lv! Have a nice time!`
        );
    }
}