Editorial for CTU Open Contest 2018 - Moving Furniture


Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
  • Basic operation: complete square from 2 given points
  • Repeat:
    • Find lowest leftmost point
    • Try to create square with each of the remaining points
    • Choose the smallest square
    • Erase points of the chosen square

Complexity \mathcal O(N^2 \log N)


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