ent font-content"><div style="position: relative; overflow: hidden;"><div>很久很久以前，有一只神犇叫yzy;</div>
<div>很久很久之后，有一只蒟蒻叫lty;</div>
<p></p></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>请你读入一个整数N;1&lt;=N&lt;=1E9,A、B模1E9+7;</div>
<p></p></div>