import java.util.Scanner;

public class main {
    public static void main (String[] args){
        Scanner sc = new Scanner(System.in);
        String S=sc.nextLine();
        char[] chars = S.toCharArray();
        int slen= S.length();

        int count =0;
        for(int i =0;i<slen;i++){
            if(chars[i]=='c'){
                for(int j =1 ; j<slen-i;j++) {
                    if(chars[i+j]=='w'){
                        for (int k =1;k<slen -i-j;k++)
                            if(chars[i+j+k]=='w'){
                                count++;

                            }
                    }
                }
            }
        }
        System.out.println(count);
    }
}