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

class Solution {
public:
    // Function to print Pattern 19
    void pattern19(int N) {
        // Initial spaces for upper half
        int iniS = 0;

        // Loop for upper half rows
        for (int i = 0; i < N; i++) {
            // Print stars on left
            for (int j = 1; j <= N - i; j++) {
                cout << "*";
            }
            // Print spaces in middle
            for (int j = 0; j < iniS; j++) {
                cout << " ";
            }
            // Print stars on right
            for (int j = 1; j <= N - i; j++) {
                cout << "*";
            }
            // Increase middle spaces by 2
            iniS += 2;
            // Move to next row
            cout << endl;
        }

        // Initial spaces for lower half
        iniS = 2 * N - 2;

        // Loop for lower half rows
        for (int i = 1; i <= N; i++) {
            // Print stars on left
            for (int j = 1; j <= i; j++) {
                cout << "*";
            }
            // Print spaces in middle
            for (int j = 0; j < iniS; j++) {
                cout << " ";
            }
            // Print stars on right
            for (int j = 1; j <= i; j++) {
                cout << "*";
            }
            // Decrease middle spaces by 2
            iniS -= 2;
            // Move to next row
            cout << endl;
        }
    }
};

int main() {
    // Create solution object
    Solution sol;
    // Define N
    int N = 5;
    // Call pattern function
    sol.pattern19(N);
    return 0;
}

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