function touristShop(input) {
    let index = 0;
    let budget = Number(input[index]);
    index++;
    let command = input[index];
    index++;
    let counter = 0;
    let priceCounter = 0;


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

        if(counter % 3 === 0){
            price = price / 2
        }

        priceCounter += price;
        budget -= price

        command = input[index];
        index++;

        if(budget < 0){
            console.log("You don't have enough money!");
            console.log(`You need ${Math.abs(budget).toFixed(2)} leva!`)
            return;
        }
    }

    console.log(`You bought ${counter} products for ${(priceCounter).toFixed(2)} leva.`)

    }