+==============================================================================+
|  DECRYPTION STATION — PUZZLE #13249                                |
+==============================================================================+

  CIPHER TYPE:     WATERSHED
  SECURITY LEVEL:  3/7

  STATUS:          [ACTIVE — AWAITING DECRYPTION]


  MISSION BRIEFING
  ----------------
A 8×8 elevation grid. Compute D8 flow accumulation — drainage area per cell maps to letters.

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





> elevation:
  [[17, 13, 86, 39, 59, 55, 87, 36], [72, 45, 46, 15, 59, 38, 50, 54], [65, 17, 76, 14, 66, 88, 52, 41], [23, 34, 35, 15, 56, 54, 34, 21], [54, 48, 82, 90, 76, 50, 67, 24], [80, 32, 76, 52, 65, 58, 19, 70], [34, 42, 19, 13, 18, 42, 81, 46], [29, 41, 79, 41, 29, 32, 73, 54]]



> grid size:
  8



> n chars:
  6



> hint:
  For each cell: find lowest neighbor (8-directional). Water flows that way. Accumulate flow from upstream cells. Sort outlet cells by accumulation -> letters.



> answer format:
  lowercase letters, no spaces or punctuation





  [INTEL] Pool fill: watershed diff 3


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


    
    > ENTER PLAINTEXT: 
    > OPERATOR ID (optional): 
    


    [ SUBMIT SOLUTION ]





  NAVIGATION
  ----------
  [LEARN] Study this cipher type
  [BROWSE] Return to database