func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     set<char> c;     int mul = 0;     long long ans = 1;     bool f = false;     string s;     cin >> s;     for (int i = 0; i < s.length(); i++) {       if (s[i] ==  ? )         ans *= 10;       else if (s[i] >= 65 && s[i] <= 74)         c.insert(s[i]);     }     if (s[0] >= 65 && s[0] <= 74 || s[0] ==  ? ) f = true;     for (int i = 0; i < c.size(); i++) ans *= (10 - i);     if (f == true) ans *= 0.9;     cout << ans;     return 0;   }   