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Буду в Харбине рассказывать про теорию чисел в олимпиадной и взрослой математической жизни. Про ряд Фарея, окружности Форда...

Посоветуйте что-нибудь! Я вот нашёл подборку задач для тренировки таиландской команды (и другую). Может, ещё околоолимпиадные подборки есть?



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Буду в Харбине рассказывать про теорию чисел в олимпиадной и взрослой математической жизни. Про ряд Фарея, окружности Форда...

Посоветуйте что-нибудь! Я вот нашёл подборку задач для тренировки таиландской команды (и другую). Может, ещё околоолимпиадные подборки есть?

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What distinguishes the app from competitors is its use of what's known as channels: Public or private feeds of photos and videos that can be set up by one person or an organization. The channels have become popular with on-the-ground journalists, aid workers and Ukrainian President Volodymyr Zelenskyy, who broadcasts on a Telegram channel. The channels can be followed by an unlimited number of people. Unlike Facebook, Twitter and other popular social networks, there is no advertising on Telegram and the flow of information is not driven by an algorithm. After fleeing Russia, the brothers founded Telegram as a way to communicate outside the Kremlin's orbit. They now run it from Dubai, and Pavel Durov says it has more than 500 million monthly active users. Unlike Silicon Valley giants such as Facebook and Twitter, which run very public anti-disinformation programs, Brooking said: "Telegram is famously lax or absent in its content moderation policy." Sebi said data, emails and other documents are being retrieved from the seized devices and detailed investigation is in progress. But the Ukraine Crisis Media Center's Tsekhanovska points out that communications are often down in zones most affected by the war, making this sort of cross-referencing a luxury many cannot afford.
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