local function query(k, x)
  io.write(k .. " " .. x .. "\n")
  io.flush()
  local ret = io.read("*l")
  return tonumber(ret)
end

local n = tonumber(io.read())
local z = 0
if n % 2 == 0 then
  z = query(2, math.floor(n / 2))
else
  z = query(1, math.ceil(n / 2))
end
while true do
  if z <= 1 then os.exit() end
  if z == 2 then io.read() os.exit() end
  local k, x = io.read():match("(%d+) (%d+)")
  k = tonumber(k)
  x = tonumber(x)
  if k == 1 then
    z = query(1, n + 1 - x)
  else
    z = query(2, n - x)
  end
end