A good problem from atcoder regular contest .

Правка en1, от vintage_Petr_Mitrichev, 2019-02-20 00:50:30

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 .

Editorial

Anyone .

История

 
 
 
 
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en1 Английский vintage_Petr_Mitrichev 2019-02-20 00:50:30 333 Initial revision (published)