Download the file a1-map-spec.zip in Assignments in the SVN. Instructions are in the PDF file W09-3311-a1-map-spec.pdf.

Since your code will be executed and checked with a script, you must follow the instructions precisely. Your work is in a directory a1-map (with ecf file as is, in this folder). Before submitting, eclean and do a fresh compile and execute to make sure that you get a green bar. Then eclean the directory a1-map again submit it:

 submit -l 3311 a1 a1-map