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