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#!/usr/bin/env ruby
BASE = [0, 1, 0, -1]
input = $stdin.readlines[0].strip.chars.map(&:to_i) * 10000
o = input[0...7].join.to_i
def get_base(n = 1, l = 0)
rbase = BASE.map { |b|
[b] * n
}.flatten
t = ((l + 1) / rbase.length) + 1
(rbase * t)[1..l]
end
l = input.length
100.times do
newinput = []
l.times do |i|
newinput[i] = input.zip(get_base(i+1, l)).map{|a, b| a * b}.sum.abs % 10
end
input = newinput
end
puts input.join[o...(o+8)]
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