function solve(input) {
    let index = 0;
    let town = input[index++];
    let packet = input[index++];
    let vip = input[index++];
    let days = +input[index++];
    if (days >= 8) {
        days -= 1;
    }
    let sum = days * 1;
    let count = 0;
    let invalid = true;
    if (town == 'Bansko' || town == 'Borovets') {
        if (vip == 'yes') {
            switch (packet) {
                case "withEquipment":
                    sum *= 100 * 0.9;
                    break;
                case "noEquipment":
                    sum *= 80 * 0.95;
                    break;
            } count++;
        } else {
            switch (packet) {
                case "withEquipment":
                    sum *= 100;
                    break;
                case "noEquipment":
                    sum *= 80;
                    break;
            }
        } count++;


    } else if (town == 'Varna' || town == 'Burgas') {
        if (vip == 'yes') {
            switch (packet) {
                case "withBreakfast":
                    sum *= 130 * 0.88;
                    break;
                case "noBreakfast":
                    sum *= 100 * 0.93;
                    break;
            }count++;
        } else {
            switch (packet) {
                case "withBreakfast":
                    sum *= 130;
                    break;
                case "noBreakfast":
                    sum *= 100;
                    break;
            }count++;
        }
    } else {
        console.log("Invalid input!");
        invalid = false;

    }



    if (days < 1) {
        console.log("Days must be positive number!");
    } else if (invalid) {
        console.log(`The price is ${sum.toFixed(2)}lv! Have a nice time!`);
    }
}

solve(['Gabrovo', 'noBreakfast', 'no', '3'])