## Computing Club's Welcome Contest

Welcome to Computing Club's Welcome Contest!

This is a practice contest for you to get familiar with the contest and judging system. The problem setters for this contest are Zeyu and allentao.

You have $$120$$ minutes to solve $$4$$ problems with difficulty ranging from CCC J1 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.