You have to look at the drawing at least once. When you return to the locker, you will have four hints, the last of which contains the locker code.
Here's the solution if you're still having trouble: https://pastebin.com/4JVcA7YY
You have to look at the drawing at least once. When you return to the locker, you will have four hints, the last of which contains the locker code.
Here's the solution if you're still having trouble: https://pastebin.com/4JVcA7YY