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| back to board | Moe reshenie.Snachala ya ushy tochki peresecheniya otrezkov, dalee dlya vsex tochek opredelyu soedeninu li onu -> sostavlyu matricu smegnosti. Potom ishy ciklu dlinoy 3.
 
 And get WA on test 12.
 Thanks. I got AC now. I BFS over WxHx4 paintable sub-cells, then extract border edges for each component, then concatenate them. If N=3, we've got triangle. | 
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