Athletes participating in a gymnastics performance line up in a square queue. If you want to reduce this square queue by one row and one column, you need to reduce 35 people. How many athletes participated in the gymnastics performance?
参加体操表演的运动员排成了一个正方形队列，如果要使这个正方形队列减少一行和一列，则要减少35人．原来参加体操表演的运动员有多少人．
<gadget id="calculator">35 + 1</gadget>
<output>36</output>

<gadget id="calculator">36 / 2</gadget>
<output>18</output>

<gadget id="calculator">18 * 18</gadget>
<output>324</output>

<result>324</result>