# encoding: UTF-8
S = gets.chomp
ans = 0
i = 0
while i < S.size
  if S[i] != '…'
    i += 1
    next
  end
  j = i
  while j < S.size and S[j] == '…'
    j += 1
  end
  ans = [ans, j-i].max
  i = j
end
puts ans