help LCPSY

WHAT IS WRONG IN THIS http://www.codechef.com/viewsolution/5133753 ?

The last if statement. By mistake u have written s1[i]<=s1[i]. It shud be s2[i].

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:D. IT is difficult to find it! :stuck_out_tongue:

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@sparky007: Please accept the answer if you have got the mistake!