A phalanx for gymnastics performances consisting of 100 people (a phalanx is a formation in a square), what is the number of people in the outermost circle of the phalanx?
由100人组成的体操表演的方阵(方阵就是排成正方形的队形)，方阵最外一周的人数为多少．
<gadget id="calculator">10 * 4</gadget>
<output>40</output>

<gadget id="calculator">40 - 4</gadget>
<output>36</output>

<result>36</result>