def diff(magic_square,s)
    d = 0
    3.times do |i|
        3.times do |j|
            d += (magic_square[i][j] - s[i][j]).abs
        end
    end
    d
end

s = Array.new
3.times do |i|
    s[i] = gets.strip.split(" ").map(&:to_i)
end

a = [4,9,2,7,6,1,8,3]
sum = -1
8.times do 
    magic_square = [[a[0],a[1],a[2]],[a[7],5,a[3]],[a[6],a[5],a[4]]]
    [diff(magic_square,s),diff(magic_square.transpose,s)].each do |d|
        if(d < sum || sum == -1)
            sum = d
        end
    end 
    a.rotate!(2)
end
puts sum