## Computing Club's Winter Contest

Welcome to Computing Club's Winter Contest!

The problem setters for this contest are Zeyu and allentao.

You have 150 minutes (previously updated from 120) to solve 4 problems with difficulty ranging from CCC J3 to S3. Each problem is worth a total of $$100$$ points.

In case of ties, the sum of the time penalties will be used as tiebreaker for this contest.