defmodule Main do
  def input, do: IO.read(:line) |> String.trim
  def ii, do: input() |> String.to_integer
  def li, do: input() |> String.split |> Enum.map(&String.to_integer/1)
  def yn(b), do: IO.puts(if b, do: "Yes", else: "No")

  @inf 10 ** 9
  def main do
    t = ii()
    for _ <- 1..t do
      [a, b, c] = li()
      solve(a, b, c)
      |> IO.puts
    end
  end

  def solve(a, b, c) do
    for {a, b, c} <- [{b, a, c}, {b, c, a}, {a, c, b}, {c, a, b}] do
      f(a, b, c)
    end
    |> Enum.min
    |> then(fn x -> if x >= @inf, do: -1, else: x end)
  end

  def f(1, _, _), do: @inf
  def f(_, 1, _), do: @inf
  def f(a, b, c) do
    cond do
      a <= b ->
        x = b - a + 1
        f(a, b-x, c) + x
      b <= c ->
        x = c - b + 1
        f(a, b, c-x) + x
      true -> 0
    end
  end

  def is_kadomatu(a, b, c) do
    if a == b or b == c or c == a do
      false
    else
      [_, x, _] = Enum.sort([a, b, c])
      b != x
    end
  end
end