n = gets.to_i
ans = Array.new(n,-1)
a = [[1,1]]
min = 100000
until a.empty?
    x = a.pop
    if x[0] == n
        min = [min, x[1]].min
    elsif ans[x[0] - 1] != -1
        next
    else
        ans[x[0] - 1] = x[1]
        tmp = x[0].to_s(2).count('1')
        if x[0] + tmp <= n
            a.push([x[0] + tmp, x[1] + 1])
        end
        if x[0] - tmp > 0
            a.push([x[0] - tmp, x[1] + 1])
        end
    end
end

if min == 100000
    p -1
else
    p min
end