func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     int a[n][4];     int l = 0;     char l0[3], l1[3], l2[3];     for (int i = 0; i < n; i++) {       cin >> l0 >> l1;       for (int j = 0; j <= l; j++) {         if (j == l) {           a[j][0] = l0[0];           a[j][1] = l0[1];           a[j][2] = l1[0];           a[j][3] = l1[1];           l++;           break;         }         if ((a[j][0] == l0[0] && a[j][1] == l0[1] && a[j][2] == l1[0] &&              a[j][3] == l1[1]) ||             (a[j][0] == l0[1] && a[j][1] == l1[1] && a[j][2] == l0[0] &&              a[j][3] == l1[0]) ||             (a[j][0] == l1[1] && a[j][1] == l1[0] && a[j][2] == l0[1] &&              a[j][3] == l0[0]) ||             (a[j][0] == l1[0] && a[j][1] == l0[0] && a[j][2] == l1[1] &&              a[j][3] == l0[1])) {           break;         }       }       if (i != n - 1) cin >> l2;     }     cout << l;   }   