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  1. N, S, E, W = 1, 2, 4, 8
  2. DX         = { E => 1, W => -1, N =>  0, S => 0 }
  3. DY         = { E => 0, W =>  0, N => -1, S => 1 }
  4. OPPOSITE   = { E => W, W =>  E, N =>  S, S => N }
Success #stdin #stdout 0s 28688KB
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stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/jjQxJx
language:
Ruby (ruby 2.5.5)
created:
7 years ago
visibility:
public

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