s = gets.chomp

i = s.index("ccw")

if i == nil
  puts 0
  exit
end

first = 0
last = 0

fs = s.dup
ls = s.dup
while fs.index("ccw") != nil
  fs[0] = ""
  first += 1
end

while ls.index("ccw") != nil
  ls[-1] = ""
  last += 1
end

puts [first, last].min