Задачка на вечер: n фиксированных чисел x1, ..., xn в полуинтервале [0; 1) хешируются в таблицу с закрытой адресацией размера m методом floor(x*m). Покажите, что независимо от n, xi, m, увеличение размера таблицы может ухудшить среднее время запроса только в константу раз.
Задачка на вечер: n фиксированных чисел x1, ..., xn в полуинтервале [0; 1) хешируются в таблицу с закрытой адресацией размера m методом floor(x*m). Покажите, что независимо от n, xi, m, увеличение размера таблицы может ухудшить среднее время запроса только в константу раз.
BY Алиса копается
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One thing that Telegram now offers to all users is the ability to “disappear” messages or set remote deletion deadlines. That enables users to have much more control over how long people can access what you’re sending them. Given that Russian law enforcement officials are reportedly (via Insider) stopping people in the street and demanding to read their text messages, this could be vital to protect individuals from reprisals. Russian President Vladimir Putin launched Russia's invasion of Ukraine in the early-morning hours of February 24, targeting several key cities with military strikes. Apparently upbeat developments in Russia's discussions with Ukraine helped at least temporarily send investors back into risk assets. Russian President Vladimir Putin said during a meeting with his Belarusian counterpart Alexander Lukashenko that there were "certain positive developments" occurring in the talks with Ukraine, according to a transcript of their meeting. Putin added that discussions were happening "almost on a daily basis." The gold standard of encryption, known as end-to-end encryption, where only the sender and person who receives the message are able to see it, is available on Telegram only when the Secret Chat function is enabled. Voice and video calls are also completely encrypted. Again, in contrast to Facebook, Google and Twitter, Telegram's founder Pavel Durov runs his company in relative secrecy from Dubai.
from hk
