func_code_string: #include <bits/stdc++.h>   using namespace std;   const int MAXN = 1e6 + 10;   const long long inf = 1e15;   const int mod = 1e6;   void faster() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);   }   const long long N = 3000 * 200;   int mark[N];   int main() {     faster();     int n;     cin >> n;     int t = 0;     vector<int> v[n];     for (int i = 1; i <= n * n; i++) {       v[(i + t) % n].push_back(i);       if (i % n == 0) t++;     }     for (int i = 0; i < n; i++) {       for (auto c : v[i]) cout << c <<    ;       cout << endl;     }   }   