I am a seventh-grade OIer from China. My mother doesn't allow me to stay up late, so I must go to bed before 22:00(UTC+8). However, most of the contests in Codeforces begin at 22:35(UTC+8), so I can only take part in few contests. As you can see, I have only taken part in 5 contests.

The people in China are having Labour Day holiday from May 1st to 5th. The contest on May 3rd will begin in the afternoon. It is really a great time for us to take part in the contest. But it was cancelled. There are 26701 Chinese OIers on this platform. That isn't a small number. They really need this contest.

After all, Please return the contest on May 3rd to us!!

For problems which rated above 1900, I can only think about one or two hints of a single problem, so I often have to read the editoral to finish a single problem after one or two hours' time thinking. But I think reading the editoral is useless to improve my CP skill. As you can see, I am a seventh-grader in Ningbo, China and I haven't got much time to practise. How can I get through this situation?

How fast can the CF C++ executer run?

Or how much data can the CF C++ executer run in one second?

Can $$$3*10^8$$$ AC in one second's limit?

Which runs faster,C++11, C++14, C++17, C++20 or C++23?

Please reply me.

Sorry for my horrible English grammar.