Moved account from banh_mi to here;

I have not yet properly solved and/or fully understood the solutions to the problems I had completed illegitimately, which are as follows: CCC '22 S2, CCC '21 J4, CCC '21 S2, CCC '24 J4, CCC '18 J5, CCC '20 S2.

Things really went from grinding .IO games to I/O problems, didn't they?

JasonChou0105, RaymondZheng1134 orz!