In problem , symmetric grid , can anyone give the proof why the method given in the editorial works . how to perform all rows and column swapping operation .
Anyone .
A good problem from atcoder regular contest .
In problem , symmetric grid , can anyone give the proof why the method given in the editorial works . how to perform all rows and column swapping operation .
Anyone .
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vintage_Petr_Mitrichev | 2019-02-20 00:50:30 | 333 | Initial revision (published) |
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