P.

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

int main() {
    int n;
    cin >> n;
    vector<vector<int>> m(n + 1, vector<int>(n + 1, 1));
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            m[i][j] = m[i][j - 1] + m[i - 1][j];
        }
    }
    for (int j = 0; j < n; j++) {
        for (int i = j; i >= 0; i--)
            cout << m[i][j - i] << " ";
        cout << endl;
    }
    return 0;
}