func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string str;     unordered_map<string, char> index;     int t;     cin >> t;     while (t--) {       cin >> str;       sort(str.begin(), str.end());       str = str.substr(0, unique(str.begin(), str.end()) - str.begin());       if (index.find(str) == index.end()) {         index.insert(unordered_map<string, char>::value_type(str,  c ));       }     }     cout << index.size() << endl;   }   