My [submission](https://mirror.codeforces.com/contest/2009/submission/279648014) for problem E of [contest:2009] was exactly the bonus solution mentioned in the editorial. I spent around 1 hour debugging during the contest but the last sample case was failing. After the contest I submitted the same solution and it passed (maybe because codeforces use gcc?). I believe there is some precision bug in Apple clang. Can anyone else try this on the last sample test?↵
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** Please ignore the excessive use of long double. I was getting panicked :) **
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** Please ignore the excessive use of long double. I was getting panicked :) **
