import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.next();

        int l = s.length();

        int count = 0;
        char[] c = new char[3];
        for(int i=0; i<l; i++) {
            c[0] = s.charAt(i);
            for(int j=i+1; j<l; j++) {
                c[1] = s.charAt(j);
                for(int k=j+1; k<l; k++) {
                    c[2] = s.charAt(k);
                    String str = String.valueOf(c);;
                    if(str.equals("cww")) count++;
                }
            }
        }

        System.out.println(count);
    }
}