Please subscribe to the official Codeforces channel in Telegram via the link https://t.me/codeforces_official. ×

### KingMace's blog

By KingMace, history, 7 months ago,

Sorry for the stupid question, couldn't find anything on stackoverflow, cuz have no idea how to google that.

I was solving one graph problem, and met this declaration of adjacency list 49661413, I am confused, how is it possible that vector of vectors is declared using vector<int> name[], and it is not a simple vector, I don't even realize what's that. Couldn't you please explain to me what's that or give me a link to website with some info? Thanks in advance

• -1

By KingMace, history, 7 months ago,

This is an example of problem form Russian state exam, you have to precompute unswer and fill in blank with this answer, you are given 4 hours for the whole exam, and this one is not the hardest, can someone please me help with fast solution.

Find all integer number on the segment [106 000 000, 107 000 000] which have 3 different even dividers. Put this numbers in the answer.