Why my answer is wrong?

general
, ,
1

https://www.codechef.com/viewsolution/20929045

2

Sry, 403 (Access denied) coming … check the link or paste it somewhere else [Ideone] (mark it as private)…

3

SORRY, IT IS AGAINST THE RULE. YOU CAN’T ASK THE ONGOING CONTEST SOLUTION… ASK THIS WHEN THE CONTEST IS OVER… [ALSO DELETE YOUR ABOVE CODE]

4

they themselves have given the link to this forum to discuss