Tindor in Bitland

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There are $N$ singles in Bitland each having a predefined score according to their personality. Now these singles are desperate to find a partner for themselves. There are 2 matchmaking services available in Bitland who try to pair these singles among themselves. They both are almost identical but the second service has an additional ‘X’ factor in it. Both services use different procedures to f

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solution.cppC++17

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