s = gets.chomp

i = s.index("ccw")

if i == nil
  puts 0
  exit
end

first = 0
last = 0

fs = s.dup
ls = s.dup

count = 0
if i+1 < s.length / 2
  while fs.index("ccw") != nil
    fs[0] = ""
    count += 1
  end
else
  while ls.index("ccw") != nil
    ls[-1] = ""
    count += 1
  end
end

puts count