function solve() {
  let furnitureList;
  let listOfOrderedProducts = [];
  let totalPrice = 0;
  let decFactor = 0;
  let countOfOrdered = 0;

  document.getElementsByTagName('button')[0].addEventListener('click', () => {
    furnitureList = JSON.parse(document.getElementsByTagName('textarea')[0].value);
    let table = document.getElementsByClassName('table')[0];
    for (let furniture of furnitureList) {
      let row = table.insertRow();
      let cell = row.insertCell();
      let img = document.createElement('img');
      img.setAttribute('src', furniture.img);
      cell.appendChild(img);
      cell = row.insertCell();

      let name = document.createElement('p');
      name.innerHTML = furniture.name;
      cell.appendChild(name);
      cell = row.insertCell();

      let price = document.createElement('p');
      price.innerHTML = Number(furniture.price);
      cell.appendChild(price);
      cell = row.insertCell();

      let decFactor = document.createElement('p');
      decFactor.innerHTML = Number(furniture.decFactor);
      cell.appendChild(decFactor);
      cell = row.insertCell();

      let checkBox = document.createElement('input');
      checkBox.setAttribute('type', 'checkbox');
      checkBox.disabled = true;
      cell.appendChild(checkBox);
      cell = row.insertCell();
    }
    for (let input of document.getElementsByTagName('input')) {
      input.disabled = false;
      input.addEventListener('change', function () {
        if (this.checked) {
          let nodeOfInput = input.parentNode;
          let nodeOfProduct = nodeOfInput.parentNode;
          let infoForProducts = nodeOfProduct.getElementsByTagName('td');
          let nameOfCheckedProduct = (infoForProducts[1].textContent).trim();
          let priceOfCheckedProduct = Number(infoForProducts[2].textContent);
          let decFactorOfCheckedProduct = Number(infoForProducts[3].textContent);
          listOfOrderedProducts.push(nameOfCheckedProduct);
          totalPrice += priceOfCheckedProduct;
          decFactor += decFactorOfCheckedProduct;
          countOfOrdered++;
        } else {
          let nodeOfInput = input.parentNode;
          let nodeOfProduct = nodeOfInput.parentNode;
          let infoForProducts = nodeOfProduct.getElementsByTagName('td');
          let nameOfUNCheckedProduct = (infoForProducts[1].textContent).trim();
          let priceOfUNCheckedProduct = Number(infoForProducts[2].textContent);
          let decFactorOfUNCheckedProduct = Number(infoForProducts[3].textContent);
          let indexOfUNChecked = listOfOrderedProducts.indexOf(nameOfUNCheckedProduct);
          listOfOrderedProducts.splice(indexOfUNChecked, 1);
          totalPrice -= priceOfUNCheckedProduct;
          decFactor -= decFactorOfUNCheckedProduct;
          countOfOrdered--;
        }
      }
      )
    };
    document.getElementsByTagName('button')[1].addEventListener('click', () => {
      let textArea = document.getElementsByTagName('textarea')[1];
      let productListPrintLine = `Bought furniture: ${listOfOrderedProducts.join(", ")}\n`;
      let pricePrintLine = `Total price: ${totalPrice.toFixed(2)}\n`;
      let decFactorPrintLine = `Average decoration factor: ${(decFactor / countOfOrdered).toFixed(1)}`;

      textArea.value = productListPrintLine + pricePrintLine + decFactorPrintLine;
    })
  })
}