The way people in country A express dates is day/month/year, while the way people in country B express dates is month/day/year. Therefore, for the date of 1/10/2006, people in country A will understand it as October 1, 2006, and people in country B will understand it as January 10. So, like this, how many ways of expressing dates that people in A and B have different understandings in 2006?
A国人表示日期的方式是日/月/年，而B国人表示日期的方式是月/日/年．所以，对于1/10/2006这个日期，A国人会理解成2006年10月1日，而B国人理解成1月10日．那么，像这样会让A、B两国人产生不同理解的日期表示方式，在2006年中还有多少个．
<gadget id="calculator">12 * 12</gadget>
<output>144</output>

<gadget id="calculator">144 - 12 - 1</gadget>
<output>131</output>

<result>131</result>