t = gets.to_i
t.times do
  a, b, c = gets.split.map &:to_i

  d = [[0, 2, 1], [1, 0, 2], [1, 2, 0], [2, 0, 1]].map { |r|
    ps = (0...3).map { |i| r.find_index { |v| v == i } }
    vs = (0...3).map { |i| [a, b, c][ps[i]] }
    next Float::INFINITY if vs[1] < 2 || vs[2] < 3
    [vs[1] - (vs[2] - 1), 0].max + [vs[0] - ([vs[1], vs[2] - 1].min - 1), 0].max
  } .min

  d = -1 if d == Float::INFINITY
  puts d
end