func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string str, s =  QWERTYUIOPASDFGHJKLZXCVBNM ;     cin >> str;     set<char> m;     long long result = 1;     for (int i = 0; i < str.size(); i++) {       if (str[i] ==  ? ) {         if (i == 0) {           result *= 9;         } else           result *= 10;       } else if (s.find(str[i]) != string::npos) {         if (i == 0) {           result *= 9;           m.insert(str[i]);         } else {           if (m.find(str[i]) == m.end()) {             result *= (10 - m.size());             m.insert(str[i]);           }         }       }     }     cout << result <<   n ;     return 0;   }   