+==============================================================================+
|  DECRYPTION STATION — PUZZLE #13320                                |
+==============================================================================+

  CIPHER TYPE:     FOUR-COLOR
  SECURITY LEVEL:  4/7

  STATUS:          [ACTIVE — AWAITING DECRYPTION]


  MISSION BRIEFING
  ----------------
Planar graph: A: B,C,D; B: A,C,E; C: A,B,D,E; D: A,C,E; E: B,C,D. Color each region with colors 1-4 so adjacent regions differ.

  INTERCEPTED DATA
  ----------------





> adjacency:
  {'A': ['B', 'C', 'D'], 'B': ['A', 'C', 'E'], 'C': ['A', 'B', 'D', 'E'], 'D': ['A', 'C', 'E'], 'E': ['B', 'C', 'D']}



> nodes:
  ['A', 'B', 'C', 'D', 'E']



> target:
  E



> hint:
  Assign colors greedily: for each node, pick the smallest color not used by its neighbors. What color is node E?



> answer format:
  color label (e.g., 'c2') for the target node





  [INTEL] Pool fill: four-color diff 4


  DECRYPTION INPUT
  ----------------


    
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