easter party 1

function easterParty(input) {
    let guestsCount = Number(input[0]);
    let envelopePrice = Number(input[1]);
    let budget = Number(input[2]);

    if (guestsCount <= 10 && guestsCount >= 15) {
        envelopePrice = envelopePrice * 0.85;
    } else if (guestsCount <= 15 && guestsCount >= 20) {
        envelopePrice = envelopePrice * 0.8;
    } else if (guestsCount > 20) {
        envelopePrice = 0.75 * envelopePrice;
    } else {
        envelopePrice = envelopePrice;
    }

    let cakePrice = 0.1 * budget;
    let totalPrice = guestsCount * envelopePrice + cakePrice;

    if (budget >= totalPrice) {
        console.log(`It is party time! ${(budget - totalPrice).toFixed(2)} leva left.`);
    } else {
        console.log(`No party! ${(totalPrice - budget).toFixed(2)} leva needed.`);
    }
}