Cody

SSOI SS

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SSOI SS submitted a Comment to Problem 136. Read a Soroban Abacus

Hi, the abacus is Chinese invention, not japanese !!!

on 15 Jun 2012

SSOI SS received Commenter badge for Problem 136. Read a Soroban Abacus

on 15 Jun 2012

SSOI SS received Solver badge for Solution 50331

on 24 Feb 2012

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