#include <bits/stdc++.h>

using namespace std;

int main() {
    int n;
    cin >> n;
    string row;
    for (int i=0;i<n;i++) {
        for (int j=0;j<n-i-1;j++) {
            row.append(" ");
        }
        for (int k=0;k<2*i+1;k++) {
            row.append("*");
        }
        cout << row << endl;
        row = "";
    }
    for (int i=n-2;i>=0;i--) {
        for (int j=0;j<n-i-1;j++) {
            row.append(" ");
        }
        for (int k=0;k<2*i+1;k++) {
            row.append("*");
        }
        cout << row << endl;
        row = "";
    }
}