Rotation Puzzle

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Recently, with the release of the ultimate computing device bytePad, a platform game with the simple name "Rotation Puzzle" immediately became a phenomenon among Bytelandians. The game is extremely simple, yet quite additive. Here's the rule: Given a MxN rectangular grid in which each cell contains a unique number from 1 to MxN. In each step, the player can pick any 2x2 subgrid and perform a rotat

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solution.cppC++17

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