Problem : [Your text to link here...1811D](https://codeforces.me/contest/1811/problem/D)↵
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Please can any one explain why my solution is not working . Submission : [Your text to link here...341981866](https://codeforces.me/contest/1811/submission/341981866).↵
Please , if any one can explain reply.
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Please can any one explain why my solution is not working . Submission : [
Please , if any one can explain reply.



