http://chay-fey.livejournal.com/ ([identity profile] chay-fey.livejournal.com) wrote in [personal profile] pouce 2009-11-13 10:25 am (UTC)

Далек от математики, первое решу, второе нет, но третье даже с точки зрения абсолютного дилетанта - шедевр!!!!!!!!!!!!!!!!!!!!!!
(9 comments)

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