#include <bits/stdc++.h>
using namespace std;


int main() {
  int a, b;
  cin >> a;
  b = pow(a, 2);
  for (int i=0; i<b; i++){
    int c = rand()% a+1;
   		if (i == 0){
        }
    	else if (i % a == 0){
      	cout << c << endl;
        }
    	else{
          cout << c <<" ";
        }
  }
  int d = rand()%a+1;
  cout << d << " ";
}