��什么时候做什么题目，使得做出来的题目数最多。在做题数一样多的情况下，罚时尽量小。<br />
&nbsp;<br />
</span></div></div></div></div></div><div class="row"><div class="column"><h4 class="ui top attached block header">输入格式</h4><div class="ui bottom attached segment font-content"><div style="position: relative; overflow: hidden;"><div class=content><div style="line-height: 140%" align="left"><span style="font-size: 14pt; color: #444444; line-height: 140%">Five