function solve() {

    let textAreaElements = document.getElementsByTagName("textarea");
    let buttonsElement = document.getElementsByTagName("button");
    let tbody = document.getElementsByTagName("tbody")[0];
    document.getElementsByTagName("input")[0].disabled = false;
    buttonsElement[0].addEventListener("click", generate);
    buttonsElement[1].addEventListener("click", buy);

    function generate() {

        let furnitureListInput = JSON.parse(textAreaElements[0].value);
        for (let i = 0; i < furnitureListInput.length; i++) {
            //tbody.appendChild(document.getElementsByTagName("tr")[1].cloneNode(true));
            addFurniture(furnitureListInput[i]);
        }
    }

    function addFurniture(currentObj) {
        let newTr = document.createElement('tr');

        let imgTd = document.createElement('td');
        let imgTag = document.createElement('img');
        imgTag.setAttribute('src', currentObj['img']);
        imgTd.appendChild(imgTag);

        let productTd = document.createElement('td');
        let productP = document.createElement('p');
        productP.textContent = currentObj['name'];
        productTd.appendChild(productP);

        let priceTd = document.createElement('td');
        let priceP = document.createElement('p');
        priceP.textContent = currentObj['price'];
        priceTd.appendChild(priceP);

        let decFacTd = document.createElement('td');
        let decFacP = document.createElement('p');
        decFacP.textContent = currentObj['decFactor'];
        decFacTd.appendChild(decFacP);

        let checkBoxTd = document.createElement('td');
        let checkBoxInput = document.createElement('input');
        checkBoxInput.setAttribute('type', 'checkbox');
        checkBoxTd.appendChild(checkBoxInput);

        newTr.appendChild(imgTd);
        newTr.appendChild(productTd);
        newTr.appendChild(priceTd);
        newTr.appendChild(decFacTd);
        newTr.appendChild(checkBoxTd);

        tbody.appendChild(newTr);
    }

    function buy() {
        let furniture = [];
        let totalPrice = 0;
        let averageFactor = 0;
        let checkbox = Array.from(document.getElementsByTagName("input"));
        for (let i = 0; i < checkbox.length; i++) {
            if (checkbox[i].checked) {
                let tableElements = checkbox[i].parentElement.parentElement;
                let name = tableElements.getElementsByTagName("p")[0].textContent;
                furniture.push(name);
                let price = tableElements.getElementsByTagName("p")[1].textContent;
                totalPrice += +price;
                let decFactor = tableElements.getElementsByTagName("p")[2].textContent;
                averageFactor += +decFactor;
            }
        }
        document.getElementsByTagName("textarea")[1].textContent += `Bought furniture: ${furniture.join(", ")}\n`;
        document.getElementsByTagName("textarea")[1].textContent += `Total price: ${totalPrice.toFixed(2)}\n`;
        document.getElementsByTagName("textarea")[1].textContent += `Average decoration factor: ${averageFactor/furniture.length}`;
    }
}