function logistics(input) {


    let contractYears = input.shift();
    let contractType = input.shift();
    let addedInternet = input.shift();
    let totalMonths = Number(input.shift());
    let monthTax = 0;
    let totalTax = 0;

    switch (contractType) {
        case "Small":
            if (contractYears == "one") {
                monthTax = 9.98;
            } else {
                monthTax = 8.58;
            } break;
        case "Middle":
            if (contractYears === "one") {
                monthTax = 18.99;
            } else {
                monthTax = 17.09;
            } break;
        case "Large":
            if (contractYears === "one") {
                monthTax = 25.98;
            } else {
                monthTax = 23.59;
            } break;
        case "ExtraLarge":
            if (contractYears === "one") {
                monthTax = 35.99;
            } else {
                monthTax = 31.79;
            } break;
    }

    if (addedInternet === "yes") {
        if (monthTax <= 10.00) {
            monthTax = monthTax + 5.50;
        } else if (monthTax > 10 && monthTax <= 30) {
            monthTax = monthTax + 4.35;
        } else {
            monthTax = monthTax + 3.85;
        }
    } else {
        monthTax = monthTax;
    }

    if (contractYears === "one") {
        totalMonthsTaxes = monthTax * totalMonths;
    } else {
        totalMonthsTaxes = monthTax * totalMonths * 0.9625;
    }
    console.log(`${totalMonthsTaxes.toFixed(2)} lv.`)


}