Cardinal Code Challenge
Jelly, 2 bytes

*2


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Note that the main entry for a Jelly program is its last link, where any newline character will split links), neither of the two-line programs actually access their top link.

The four full programs, all of which implicitly print their result, are:

North:

*2   -&gt; (implicit) zero raised to the power of 2 = 0


East:

*
2    -&gt; literal 2 = 2


South:

2*   -&gt; two raised to the power of (implicit) 2 = 4


West:

2
*    -&gt; (implicit) zero raised to the power of (implicit) zero = 1