Hi, everyone.<br></br>↵
<p>Can someone, please, explain the solution for this <a href="http://community.topcoder.com/stat?c=problem_statement&pm=875">problem ?</a></p> I really cannot understand what editorial wants to say.
<p>Can someone, please, explain the solution for this <a href="http://community.topcoder.com/stat?c=problem_statement&pm=875">problem ?</a></p> I really cannot understand what editorial wants to say.
