# Enter your code here. Read input from STDIN. Print output to STDOUT

s = Array.new(3)
for s_i in (0..2)
    s_t = gets.strip
    s[s_i] = s_t.split(' ').map(&:to_i)
end
s = s.inject(:+)
#=begin
mag_squares = [
    [8, 1, 6, 3, 5, 7, 4, 9, 2],
    [6, 1, 8, 7, 5, 3, 2, 9, 4],
    [4, 3, 8, 9, 5, 1, 2, 7, 6],
    [2, 7, 6, 9, 5, 1, 4, 3, 8],
    [2, 9, 4, 7, 5, 3, 6, 1, 8],
    [4, 9, 2, 3, 5, 7, 8, 1, 6],
    [6, 7, 2, 1, 5, 9, 8, 3, 4],
    [8, 3, 4, 1, 5, 9, 6, 7, 2]
    ]
#=begin
for i in (0..mag_squares.length - 1)
    #print mag_squares[i].inject(:+).sort
    #mag_squares[i].each do |row|
    #print "#{row} #{row.inject(:+)}\n"
#end
    #puts " "
end
#=end
arr1_9 = [1, 2, 3, 4, 5, 6, 7, 8, 9]
costs = []
for i in (0..mag_squares.length - 1)
    cost = 0
    for k in 0..mag_squares[i].length - 1
        if s[k] > mag_squares[i][k]
            cost += s[k] - mag_squares[i][k]
        elsif s[k] < mag_squares[i][k]
            cost += mag_squares[i][k] - s[k]
        end
    end
    costs << cost
    #if (arr1_9 <=> s.sort) == 1
    #costs[i] = mag_squares[i] - s
    #end
    #if (arr1_9 <=> s.sort) == -1
    #costs[i] = s - mag_squares[i]
    #end
    #mag_squares[i].each { |num| print "#{num} " }
    #puts " "
    #puts mag_squares[i].sort <=> s.sort
    
end
 
#costs.each { |num| print "#{num} " }
#puts " "
#s.each { |num| print "#{num} " }   # matrix output test
print costs.min
#=end
=begin
arr1_9 = [1, 2, 3, 4, 5, 6, 7, 8, 9]
s = s.inject(:+).sort
print s
puts " "
#print arr_9
puts arr_9 <=> s
=end