function touristShop (input) {

    let budget = Number(input.shift());
    let product = input.shift();
    let count = 0;
    let totalSum = 0;


    while(product !== 'Stop') {
        count++;
        let price = Number(input.shift());


        if(count % 3 == 0) {
            price = price / 2
        }
        budget = budget - price;
        totalSum += price;





        if(price > budget) {
            console.log(`You don't have enough money!`)
            console.log(`You need ${Math.abs(budget).toFixed(2)} leva!`)
            break;
        }

        product = input.shift();

    }

    if(product == 'Stop') {
        console.log(`You bought ${count} products for ${totalSum.toFixed(2)} leva.`)
    }



}