func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, k;   int main() {     cin >> n >> k;     cout << k * (6 * n - 1) << endl;     for (int i = 1; i <= n; i++) {       int x = (i - 1) * 6 + 1;       cout << k * x <<     << k * (x + 1) <<     << k * (x + 2) <<                << k * (x + 4) << endl;     }   }   