How to solve this problem?

Правка en1, от code_tycoon, 2022-03-14 00:12:19

This question was asked in hackwithinfy, I could not approach this problem anyhow, can anyone tell me the optimal approach to solve these type of problems and the solution of this specific problem

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  Rev. Язык Кто Когда Δ Комментарий
en3 Английский code_tycoon 2022-03-14 00:16:16 145
en2 Английский code_tycoon 2022-03-14 00:14:27 161
en1 Английский code_tycoon 2022-03-14 00:12:19 222 Initial revision (published)