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Discussion of Problem 1628. White Streaks

If Graph
Posted by Nikolai Besschetnov 17 Oct 2008 21:25
What algorythm we ought to use?
Re: If Graph
Posted by svr 17 Oct 2008 21:32
It may be sorting of black positions on each row and each
column. Case 1*1 must be considered separetely , for example with help of find position in sorted arrays.