func_code_string: #include <bits/stdc++.h>   using namespace std;   bitset<7000> bit;   int main() {     int n, count = 0;     cin >> n;     while (n--) {       int int1, int2;       string stars;       cin >> int1 >> int2;       if (n >= 1) cin >> stars;       int a = int1 / 10, b = int1 % 10, c = int2 % 10, d = int2 / 10;       int i1 = 1000 * a + 100 * b + 10 * c + d,           i2 = 1000 * d + 100 * a + 10 * b + c,           i3 = 1000 * c + 100 * d + 10 * a + b,           i4 = 1000 * b + 100 * c + 10 * d + a;       if (!bit[i1] && !bit[i2] && !bit[i3] && !bit[i4]) {         count++;         bit.set(i1);         bit.set(i2);         bit.set(i3);         bit.set(i4);       }     }     cout << count << endl;   }   