func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     string s1, s2;     cin >> s1 >> s2;     int a, b, c, d;     a = s1[0] -  0 ;     b = s1[1] -  0 ;     c = s2[1] -  0 ;     d = s2[0] -  0 ;     vector<int> v1({a, b, c, d});     map<vector<int>, int> mp;     mp[{a, b, c, d}] = 1;     n--;     while (n--) {       string s;       cin >> s;       cin >> s1 >> s2;       a = s1[0] -  0 ;       b = s1[1] -  0 ;       c = s2[1] -  0 ;       d = s2[0] -  0 ;       vector<int> v1({a, b, c, d});       vector<int> v2({b, c, d, a});       vector<int> v3({c, d, a, b});       vector<int> v4({d, a, b, c});       if (mp.find({a, b, c, d}) != mp.end()) {         continue;       } else if (mp.find({b, c, d, a}) != mp.end()) {         continue;       } else if (mp.find({c, d, a, b}) != mp.end()) {         continue;       } else if (mp.find({d, a, b, c}) != mp.end()) {         continue;       } else         mp[{a, b, c, d}] = 1;     }     cout << mp.size() << endl;     return 0;   }   