#include <string>
#include <iostream>

int main()
{
    std::string s;
    std::cin >> s;
    
    int digit = 0;
    int symbol = 0;
    
    for(const auto& c : s)
    {
        if(c == 'l' || c == 'o') digit++;
        if(c == 'a' || c == 's') symbol++;
    }
    
    int ds = 1 << (digit + symbol);
    int d_only = 1 << digit;
    int s_only = 1 << symbol;
    if(digit && symbol) std::cout << (ds - d_only - s_only + 1) << std::endl;
    else std::cout << 0 << std::endl;
}