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Задачи

Рамка

опубликовано 08.06.2023, 12:04:03

TIP: I find this problem hard to think as a square frame. Much easier to make line from it. This way there will be 8 points where I need to break line to make square - 2 points for every corner. Decrement every point to make another 8 for the case when first cell is not filled up.

This approach creates linear and simple solution.