style="text-indent: 21.75pt"><span style="font-size: medium">第一行一个正整数N，表示操作总数，开始内存中过程为空；</span></div>
<div style="text-indent: 21.75pt"><span style="font-size: medium">然后N行每行按照如上格式描述一个任务；</span></div>
<div><span style="font-size: medium">&nbsp;</span></div></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 f