Right, I recently have learnt Pólya theorem, but I can't find problems of it (except "Necklace" in UVaOJ and those in ProjectEuler).
Can you recommend some?
(PS: Burnside lemma is too abstract to understand...)
Right, I recently have learnt Pólya theorem, but I can't find problems of it (except "Necklace" in UVaOJ and those in ProjectEuler).
Can you recommend some?
(PS: Burnside lemma is too abstract to understand...)
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