ooo

function solve(days, roomKind, rating) {
    days = Number(days);

    let roomForOnePersonOneNightPrize = 18.00;
    let apartamentForOneNightPrize = 25.00;
    let presidenAparatmentForOneNightPrize = 35.00;

    let discount = 0;
    let sumWithNoDiscount = 0;
    let nights = days - 1;
    let sum = 0;

    if (days < 10) {
        switch(roomKind) {
            case 'room for one person':
                discount = 0;
                sumWithNoDiscount = nights * roomForOnePersonOneNightPrize;
                sum = sumWithNoDiscount;
                break;
            case 'apartment':
                sumWithNoDiscount = nights * apartmentForOneNightPrize;
                discount = sumWithNoDiscount * 0.3;
                sum = sumWithNoDiscount - discount;
                break;
            case 'president apartment':
                sumWithNoDiscount = nights * presidenAparatmentForOneNightPrize;
                discount = sumWithNoDiscount * 0.1;
                sum = sumWithNoDiscount - discount;
                break;
        }

    } else if (days >= 10 && days <= 15) {
        switch(roomKind) {
            case 'room for one person':
                discount = 0;
                sumWithNoDiscount = nights * roomForOnePersonOneNightPrize;
                sum = sumWithNoDiscount;
                break;
            case 'apartment':
                sumWithNoDiscount = nights * apartamentForOneNightPrize;
                discount = sumWithNoDiscount * 0.35;
                sum = sumWithNoDiscount - discount;
                break;
            case 'president apartment':
                sumWithNoDiscount = nights * presidenAparatmentForOneNightPrize;
                discount = sumWithNoDiscount * 0.15;
                sum = sumWithNoDiscount - discount;
                break;

        }
    } else if (days > 15) {
        switch(roomKind) {
            case 'room for one person':
                discount = 0;
                sumWithNoDiscount = nights * roomForOnePersonOneNightPrize;
                sum = sumWithNoDiscount;
                break;
            case 'apartment':
                sumWithNoDiscount = nights * apartamentForOneNightPrize;
                discount = sumWithNoDiscount * 0.5;
                sum = sumWithNoDiscount - discount;
                break;
            case 'president apartment':
                sumWithNoDiscount = nights * apartamentForOneNightPrize;
                discount = sumWithNoDiscount * 0.20;
                sum = sumWithNoDiscount - discount;
                break;

        }
    }

    if (rating === 'positive') {
        sum = sum + sum * 0.25;
    } else if (rating === 'negative') {
        sum = sum - sum * 0.1;
    }

    console.log(sum.toFixed(2));

}

solve('12', 'room for one person', 'positive');