func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long int n;     cin >> n;     if (n == 0)       cout << 1;     else {       switch (n % 4) {         case 0:           cout << 6 << endl;           break;         case 1:           cout << 8 << endl;           break;         case 2:           cout << 4 << endl;           break;         case 3:           cout << 2 << endl;           break;       }     }     return 0;   }   