bench after

./day05.rb day05.txt
11108
Measure Mode: wall_time
Thread ID: 70124925349400
Fiber ID: 70124933569380
Total: 0.667235
Sort by: self_time

 %self      total      self      wait     child     calls  name
 62.45      0.417     0.417     0.000     0.000    30543   Array#insert
 27.66      0.661     0.185     0.000     0.476        1   Array#each
  6.17      0.041     0.041     0.000     0.000    98706   String#upcase
  1.45      0.010     0.010     0.000     0.000    49989   Array#first
  1.26      0.008     0.008     0.000     0.000    49989   Kernel#nil?
  0.82      0.005     0.005     0.000     0.000        1   String#chars
  0.14      0.001     0.001     0.000     0.000        1   Array#join
  0.03      0.000     0.000     0.000     0.000        1   Array#reverse
  0.01      0.000     0.000     0.000     0.000        1   IO#write
  0.01      0.667     0.000     0.000     0.667        1   [global]#[no method]
  0.00      0.667     0.000     0.000     0.667        1   <Class::Alchemy>#remove_polymers
  0.00      0.000     0.000     0.000     0.000        1   IO#puts
  0.00      0.661     0.000     0.000     0.661        1   Enumerable#foldr
  0.00      0.000     0.000     0.000     0.000        1   Kernel#puts
  0.00      0.661     0.000     0.000     0.661        1   Enumerable#inject
  0.00      0.000     0.000     0.000     0.000       11   NilClass#nil?
  0.00      0.000     0.000     0.000     0.000        1   Integer#to_s