274A - k-Multiple Free Set can be simplified into sorting the set and saying while there are elements left in the set, insert the first element x into the answer and delete x * k directly after. Was very easy for div 2C.

My implementation: 119486798

Unfortunately it was that way for me with both B and C; I suppose I can kiss my pupil rank goodbye...

I perfectly understand it, the only problem is I am stupid and cannot figure out how to solve it ;)

you have plenty of time to play with these queue times :D

orz

well that was embarrassing

yo same! good luck man, I'll see you in purple :)

me too, I had to skip it and come back to it..

deez nuts

"How to solve A?"

I didn't do so hot...