Insanely Hard School Exams

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After failing to clear his school mathematics examination, infinitepro decided to prepare very hard for his upcoming re-exam, starting with the topic he is weakest at ― computational geometry. Being an artist, infinitepro has $C$ pencils (numbered $1$ through $C$); each of them draws with one of $C$ distinct colours. He draws $N$ lines (numbered $1$ through $N$) in a 2D Cartesian coordinate sys

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solution.cppC++17

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