function touristshop(input) {
    let budget = Number(input.shift());
    //let budgetTmp = budget
    let price = 0;
    let command = input.shift();
    let counter = 0;

    while (command != "Stop") {
      counter++;
      if (counter % 3 == 0) {
        price += Number(input.shift())/2

      } else {
        price += Number(input.shift())
      }
      if (price > budget) {
        console.log(You don't have enough money!);
        console.log(You need ${Math.abs(price - budget).toFixed(2)} leva!);
        return
      } //else {

        /* budgetTmp -= price;
        //result += price;
        if (budgetTmp == 0) {
          break;
        } */
      //}

      command = input.shift()

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