def dfs(s, cww)
	if cww == "cww"
		@count += 1
		return
	end
	return if s.length == 0
	if cww == ""
		if s[0] == "c"
			dfs(s[1..-1], "c")
			dfs(s[1..-1], "")
		else
			dfs(s[1..-1], "")
		end
	elsif cww == "c"
		if s[0] == "w"
			dfs(s[1..-1], "cw")
			dfs(s[1..-1], "c")
		else
			dfs(s[1..-1], "c")
		end
	elsif cww == "cw"
		if s[0] == "w"
			dfs(s[1..-1], "cww")
			dfs(s[1..-1], "cw")
		else
			dfs(s[1..-1], "cw")
		end
	end
end

@count = 0
s = gets.strip
#puts s
dfs(s, "")
p @count