touristShop.js

function touristShop(input) {
    let index = 0;
    let budget = Number(input[index]);
    index++;
    let command = input[index];
    index++;
    let accessoryCounter = 0;
    let accessoryTotalCost = 0;
    let enoughMoney = true;

    while (command !== "Stop") {
        let accessoryPrice = Number(input[index]);
        index++;
        accessoryCounter++;

        if (accessoryCounter % 3 === 0) {
            accessoryPrice /= 2;
        }

        if (budget - accessoryPrice < 0) {
            enoughMoney = false;
            let requiredMoney = accessoryPrice - budget;
            console.log(`You don't have enough money!`);
            console.log(`You need ${requiredMoney.toFixed(2)} leva!`);
            break;
        } else {
            budget -= accessoryPrice;
            accessoryTotalCost += accessoryPrice;
        }

        command = input[index];
        index++;
    }

    if (enoughMoney) {
        console.log(`You bought ${accessoryCounter} products for ${accessoryTotalCost.toFixed(2)} leva.`);
    }
}

touristShop(["153.20", "Backpack", "25.20", "Shoes", "54", "Sunglasses", "30", "Stop"]);
touristShop(["54", "Thermal underwear", "24", "Sunscreen", "45"]);