Назовём левым путём последовательность клеток, в которой каждая следующая — соседняя слева или снизу с предыдущей, правым путём – то же, но клетка соседняя снизу или справа. Клетчатый квадрат n × n разбит на левые и правые пути. Докажите, что их хотя бы n.
Назовём левым путём последовательность клеток, в которой каждая следующая — соседняя слева или снизу с предыдущей, правым путём – то же, но клетка соседняя снизу или справа. Клетчатый квадрат n × n разбит на левые и правые пути. Докажите, что их хотя бы n.
Two days after Russia invaded Ukraine, an account on the Telegram messaging platform posing as President Volodymyr Zelenskiy urged his armed forces to surrender. Pavel Durov, a billionaire who embraces an all-black wardrobe and is often compared to the character Neo from "the Matrix," funds Telegram through his personal wealth and debt financing. And despite being one of the world's most popular tech companies, Telegram reportedly has only about 30 employees who defer to Durov for most major decisions about the platform. Telegram users are able to send files of any type up to 2GB each and access them from any device, with no limit on cloud storage, which has made downloading files more popular on the platform. He said that since his platform does not have the capacity to check all channels, it may restrict some in Russia and Ukraine "for the duration of the conflict," but then reversed course hours later after many users complained that Telegram was an important source of information. Emerson Brooking, a disinformation expert at the Atlantic Council's Digital Forensic Research Lab, said: "Back in the Wild West period of content moderation, like 2014 or 2015, maybe they could have gotten away with it, but it stands in marked contrast with how other companies run themselves today."
from pl
