# encoding: utf-8                                                            

def solve(xa, ya, ra, xb, yb, rb)
  d = Math.sqrt((xb - xa) ** 2 + (yb - ya) ** 2)
  if d <= (ra - rb).abs
    2 * ((ra - rb).abs / (ra - rb)).to_i
  elsif d > (ra - rb).abs and d <= (ra + rb).abs
    1
  else
    0
  end
end

def main
  t = gets.chomp.to_i
  (1..t).each do |ca|
    xa, ya, ra, xb, yb, rb =gets.chomp.split(/\s/).map(&:to_f)
    puts "#{solve(xa, ya, ra, xb, yb, rb)}"
  end
end

main