Given a string is input to the application containing compass directions (NESW) the result is an integer for the number of unique locations visited. The origin (starting position) does not count as a visited location unless you revist it on your travels.
Example
The input of "NESSWWNNES" would draw this map, starting at o and finishing in the same position.
. . . . .
. x x x .
. x o x .
. x x x .
. . . . .
The application will return the number 9.