There are 14 stations on a certain railway line. How many different types of tickets are needed on this railway line?
某铁路线上共有14个车站，这条铁路线上共需多少种不同的车票？
<gadget id="calculator">14 - 1</gadget>
<output>13</output>

<gadget id="calculator">14 * 13</gadget>
<output>182</output>

<result>182</result>