General

Can I have more than one partner?

No. You may work with only one partner on HWs and PAs unless otherwise noted.

How does the PNG coordinate system work?

The upper left corner is (0, 0). A PNG with width == 3, height == 4 has coordinates:

+--------+--------+--------+
|        |        |        |
| (0, 0) | (1, 0) | (2, 0) |
|        |        |        |
+--------+--------+--------+
|        |        |        |
| (0, 1) | (1, 1) | (2, 1) |
|        |        |        |
+--------+--------+--------+
|        |        |        |
| (0, 2) | (1, 2) | (2, 2) |
|        |        |        |
+--------+--------+--------+
|        |        |        |
| (0, 3) | (1, 3) | (2, 3) |
|        |        |        |
+--------+--------+--------+

How do you run Valgrind on a Mac?

Unfortunately, Valgrind doesn’t support newer Macs. Instead, you should run valgrind on the remote servers.

How do I find the post number on Piazza?

Two ways:

1. Hover over the dropdown in the post list; your post number is at the top:

   

2. The post number is visible at the end of the of URL of the post page.

   https://piazza.com/...?cid=1291
                              ^^^^ this is the post number.