local UF = {}
UF.create = function(self, n)
  self.parent = {}
  self.g = {}
  for i = 1, n do
    self.parent[i] = i
    self.g[i] = true
  end
  self.gc = n
end
UF.getroot = function(self, idx)
  local parent = self.parent
  local idx_update = idx
  while parent[idx] ~= idx do
    idx = parent[idx]
  end
  while parent[idx_update] ~= idx do
    parent[idx_update], idx_update = idx, parent[idx_update]
  end
  return idx
end
UF.unite = function(self, a, b)
  local ra = self:getroot(a)
  local rb = self:getroot(b)
  if ra ~= rb then
    self.g[rb] = nil
    self.gc = self.gc - 1
    self.parent[b], self.parent[rb] = ra, ra
  end
end
UF.new = function(n)
  local obj = {}
  setmetatable(obj, {__index = UF})
  obj:create(n)
  return obj
end

local n = io.read("*n")
local uf = UF.new(n)
local q = io.read("*n")
for iq = 1, q do
  local tp = io.read("*n")
  if tp == 1 then
    local a, b = io.read("*n", "*n")
    uf:unite(a, b)
  else
    local a = io.read("*n")
    if 1 < uf.gc then
      local g = uf.g
      local k1, v1 = next(g)
      local k2, v2 = next(g, k1)
      local r = uf:getroot(a)
      print(k1 + k2 - r)
    else
      print(-1)
    end
  end
end