#define _USE_MATH_DEFINES
#include  <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
#include<math.h>
#include<iomanip>
#include<stdio.h>
#include <stdlib.h>
#include<stdio.h>
#include <queue>
#include<map>
#include <fstream>
#include <sstream>
#include<set>
#include<stack>
#include<time.h>
#include <sys/types.h>
#include <tuple>
#include <numeric>
#include <iterator>

typedef long long int ll;
//#include<bits/stdc++.h>


using namespace std;

ll gcd(ll a, ll b) {
    if (a < b)swap(a, b);
    if (b == 0)return a;
    return gcd(b, a % b);
}
int lcm(int a, int b) {
    return a * b / gcd(a, b);
}


int main()
{

    int Q;
    Q = 1;
    //cin >> Q;
    
    while (Q--) {
        string p;
        cin >> p;
        int n = p.size();
        int z = 0, s = 0;
        for (int i = 0; i < n; i++) {
            if (p[i] == 'l' || p[i] == 'o')z++;
            if (p[i] == 'a' || p[i] == 's')s++;
        }
        if (!s || !z)cout << 0;
        else if (s + z == n)cout << (pow(2, s) - 1) * (pow(2, z) - 1) - 1;
        else cout << max((int)(pow(2, s) - 1) * (int)(pow(2, z) - 1),0);
    }
    return 0;
}