# coding: utf-8
s = gets.chomp
i = 0
j = 0
l = s.size
r = 0

while i < l do
  while j < l && s[j] == "…" do
    j += 1
  end
  r = [r, j - i].max
  if j == i then
    i += 1
    j = i
  else
    i = j
  end
end

puts "#{r}"