func_code_string: #include <bits/stdc++.h>   using namespace std;   template <class T>   void read(T& num) {     char CH;     bool F = false;     for (CH = getchar(); CH <  0  || CH >  9 ; F = CH ==  - , CH = getchar())       ;     for (num = 0; CH >=  0  && CH <=  9 ;          num = num * 10 + CH -  0 , CH = getchar())       ;     F && (num = -num);   }   int stk[70], tp;   template <class T>   inline void print(T p) {     if (!p) {       puts( 0 );       return;     }     while (p) stk[++tp] = p % 10, p /= 10;     while (tp) putchar(stk[tp--] +  0 );     putchar(  n );   }   const int mod = 1e9 + 7;   const double PI = acos(-1.0);   const int inf = 1e9;   const int N = 1e6 + 20;   const int maxn = 1e5 + 110;   const double eps = 1e-12;   int main() {     int n, k;     read(n);     read(k);     cout << (n - 1) * 6 * k + 5 * k << endl;     for (int i = 1; i <= n; i++) {       int t = (i - 1) * 6 + 1;       printf( %d %d %d %d n , t * k, t * k + k, t * k + 2 * k, t * k + 4 * k);     }     return 0;   }   