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#!/usr/bin/env ruby
input = gets.chomp.split("\t").map(&:to_i)
def index_of_max(arr)
idx = 0
max = 0
(0...arr.length).each do |i|
if arr[i] > max then
idx = i
max = arr[i]
end
end
return idx
end
def redistribute(arr, idx)
new = arr.dup
len = new.length
blks = new[idx]
new[idx] = 0
i = idx
while blks > 0 do
i = (i + 1) % len
new[i] += 1
blks -= 1
end
return new
end
previous = []
state = input.dup
steps = 0
until previous.include?(state) do
newstate = redistribute(state, index_of_max(state))
previous << state
state = newstate
steps += 1
end
puts steps
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