ntent><p><font size="4">The first and only input line contains two integers N and K （2&lt;=N&lt;=1000000,1&lt;=K&lt;=N）): the number of questions prepared by professor and the lower limit of the difficulty difference of subsequent exam questions. <br />
</font></p></div></div></div></div></div><div class="row"><div class="column"><h4 class="ui top attached block header">输出格式</h4><div class="ui bottom attached segment font-content"><div style="position: relative; overflow: hidden;"><div class=co