LightOj 1021 (Painful Bases)

Painful Bases
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LightOj 1060 (nth Permutation)

nth Permutation
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LightOj 1071 (Baker Vai)

Baker Vai
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LightOj 1307 (Counting Triangles)

Counting Triangles
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LightOj 1005 (Rooks)

Rooks
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