This is the annual coding contest organized in Russia by several universities for the last 18 years. The tasks are targeted at high school students but are traditionally quite hard.
OpenAI is guarding all the information about ChatGPT popularity and usage numbers obviously. Some indirect conclusions can be made from https://www.similarweb.com/website/openai.com/#overview. The absolute numbers are huge, but the explosive growth stopped a couple months ago.
Still puzzled about the liquid, the hook, the diff jar lid with a ring, the two-colored PCB track-like shapes the cauldron is producing and whether "ke" is make.
Apple considers the iPhone a single product. It has many features: some of them require extra payment. For example, you can purchase a feature that allows you to play a game about Pokemon. Apple outsources the development of some of iPhone features to 3rd parties. Some of those 3rd party iPhone feature developers mistakenly think of themselves as independent application developers. Apple mercifully allows such miscategorization because it does not really matter for them or their customers.