Hello dear society of codeforces! I want to apologize in advance for my bad English.

Recently, I wondered how many offline computer science Olympiads exist annually in which people or teams from other countries can participate. Moreover, the Olympiads in which schoolchildren can participate. I could only remember IZHO and IOI from this. Can you tell us about other Olympiads that have not yet passed and have the opportunity to be held offline or have a fairly high prestige?