#include <iostream>

using namespace std;

void print(int n, int i = 1) {
    if (i <= n) {
        for (int k = 1; k <= i; ++k) {
            cout << i << " ";
        }
        cout << endl;
        print(n, ++i);
    }
}

int main() {
    int n;
    cin >> n;
    print(n);
    return 0;
}