v><div class="row"><div class="column"><h4 class="ui top attached block header">数据范围与提示</h4><div class="ui bottom attached segment font-content"><div style="position: relative; overflow: hidden;">
			<div class=content><p><p>对于100%的数据，1&le;n&le;10^5, &nbsp; 1&le;m&le;10^6,1&le;k&le;5000,1&le;ri&le;10^5,-m&le;a1,a2&le;m</p><br />
<p></p></p></div></div></div></div></div></div></div><div class="ui vertical footer segment"><div class="ui center aligned container"><span style="color: 