what is hacking phase please explain it a bit and what do we mean by hack .can it be done during the contest or only in open hacking phase after contest time(if it is there)
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what is hacking phase please explain it a bit and what do we mean by hack .can it be done during the contest or only in open hacking phase after contest time(if it is there)
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In hacking phase you can see others solution. If a solution is accepted for preliminary testcases and you think there's a testcase exists for which the solution will not be accepted, then you can hack the solution with the testcase.