In this week(or next problem sessions), students will get back their HW.
You'll find that the 1st HW is graded on a 3-2-1-0 system.

However, owing to some subtle circumstances, every students who submitted the
1st HW get full 3 points . It means that, whatever the score on your HW sheet says,
you earn 3 points.

From the 2nd HW, another marking scheme will be used in grading.

We strongly encourage students to collaborate on HW. Please, however, do NOT just copy
the work of another student and do not give your HW to someone so that.

- TA Hojoo Lee