I read The Art of Computer Programming series in my spare time trying to solve the exercises, seems perfect for what you want or make a past time of going throu

I read The Art of Computer Programming series in my spare time trying to solve the exercises, seems perfect for what you want or make a past time of going through competitive programming exercises https://contest.cs.cmu.edu/295/f18/ https://contest.cs.cmu.edu/295/f18/