#include<iostream>
using namespace std;
const int length = 20;

void arr1Line(int arr[][length], int n)
{
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            cout<<arr[i][j]<<' ';
        }
    }

}
int main() {
    int arr[length][length];
    int n;
    do
    {
        cin >> n;
    } while (n<=0||n>length);
    arr1Line(arr, n);
    system("pause");
    return 0;

}