Dumbo Octopus

Parse the input:
  Split each new line into an array of lines
    Split each line into an array of characters
      Coerce each character into a number

Keep track of octopuses that flashed:
  Expects these parameters:
    1. Incremented 10x10 grid
    2. List of coordinates of octopuses that already flashed
  Setup new list to track newly flashing octopuses
  For each cell in the 10x10 grid
    If the cell's value is 10 and the accumulated list of coordinates does not include the cell's location:
      Add the coordinate to the new list
  Return the new list

Update energy levels of adjacent octopuses:
  Expects these parameters:
    1 and 2. row, cell indexes
    3. 10x10 grid
  For each of this cell's eight adjacent cells:
    Add one to that cell's value, as long as:
      It exists (mindful of corners and edges)
      It is not 10

Main algorithm:
  For each cell in the 10x10 grid:
    Update each cell's value by 1
  Setup array to store coordinates of each octopus that flashes this round
  Collect the coordinates of each octopus that just flashed
  While at least one octopus just flashed:
    For each octopus that just flashed:
      Update the energy levels of each adjacent octopus
      Add their row,cell locations to the list
    Collect the row,cell locations of any adjacent octopuses that flashed
    Update the list of coordinates of octopuses that flashed last round to reference the collection of adjacent flashing octopuses
  Update the values of all octopuses that flashed from 10 to 0

Find the round after which all octopuses flash simultaneously:
  Set a count to 0
  While every cell's value in the 10x10 grid is not 0:
    Increment the count by 1
    Perform the main algorithm