#include <stdio.h>
#include <string.h>

int main () {
  char s[9] = "";
  
  int res = 0;
  
  int ans = 0;
  int len = 0;
  
  res = scanf("%s", s);
  len = strlen(s);
  
  for (int i = 0; i < (1<<len)-1; i++) {
    int sign = 0;
    int num = 0;
    int is_ok = 1;
    for (int j = 0; j < len; j++) {
      if ((i&(1<<j)) > 0 && (s[j] == 'l' || s[j] == 'o')) {
        num++;
      } else if ((i&(1<<j)) > 0 && (s[j] == 's' || s[j] == 'a')) {
        sign++;
      } else if ((i&(1<<j)) > 0) {
        is_ok = 0;
      }
    }
    if (is_ok*sign*num > 0) {
      ans++;
    }
  }
  printf("%d\n", ans);
  return 0;
}