Вертолет Егора
Очень хорошо для мальчика 8 с половиной лет с опытом управления вертолетом 3 недели.
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![Задача про вертолёт с канатом [Veritasium]](https://sun9-30.userapi.com/_cHmMt-OhzmQjHFSHS5QYe6NsIf2kg0iQGZoxA/eiH7uxpl1y8.jpg)
9 months ago 00:00:19 1
