This contest is the second in a series of mock CCO contests. There may only be two such contests.

You will have 4 hours to do 3 problems with full feedback. You may submit no more than 50 submissions per problem. Additionally, the scoreboard will be disabled during the contests.

Although we are giving full feedback, keep in mind the following:

• Suboptimal solutions will still be able to earn marks. All competitors are encouraged to go for partial marks on problems they cannot fully solve.
• The problems do not follow the conventional scoring scheme for CCO.

This contest will not be rated.