local n = io.read("*n")
local x, y = {}, {}
for i = 1, n do
  x[i], y[i] = io.read("*n", "*n")
end
table.sort(x)
table.sort(y)
local hn = math.ceil(n / 2)
local z = 0
for i = 1, n do
  z = z + math.abs(x[i] - x[hn]) + math.abs(y[i] - y[hn])
end
print(z)