title: TLE in case of unsigned
body: <p>I was solving a question on spoj and got TLE when I used unsigned long long while it got accepted when I used long long.</p>
  
  <p>Here is the link to the problem.<a href="http://www.spoj.com/problems/BEENUMS/" rel="nofollow">Click Here</a></p>
  
  <p>Can someone please tell the reason.</p>