Discussion @ 1589. Sokoban @ Timus Online Judge

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Discussion of Problem 1589. Sokoban

Shen Yang give a configuration, is there O(P) sol to judge it has a sol?? [1] // Problem 1589. Sokoban 13 Jan 2019 12:39

I think the answer is probablye Yes...

Shen Yang Re: give a configuration, is there O(P) sol to judge it has a sol?? // Problem 1589. Sokoban 13 Jan 2019 12:42

I think it is relating to the number of inverse pairs of permuation..