Directi internship question

please tell me if it is a adhoc based question or we need to know certain things beforehand to solve it?

No special knowledge needed. Just a little use of logic will do
FMg1i4 - Online C++0x Compiler & Debugging Tool - Here is a link to my code…hope it helps

This my O(log(L)) solution. I used Divide and Conquer technique to solve this.

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