10. Diamond

#include <iostream>

using namespace std;

string repeat(string s, int n) {
    string result;

    for (int i = 0; i < n; i++)
        result += s;

    return result;
}

int main() {
    int n;
    cin >> n;

    string inDashes, outDashes, border;

    for (int i = 0; i < n / 2 + (n % 2); i++) {
        outDashes = repeat("-", (n - 1) / 2 - i);
        border = "*";

        if (i == 0) {
            if (n % 2 == 0) {
                border = "**";
            }
            cout << outDashes + border + outDashes << endl;
        }
        else {
            string inDashes = repeat("-", i * 2);
            if (n % 2 == 1) {
                inDashes = repeat("-", i * 2 - 1);
            }
            cout << outDashes + border + inDashes + border + outDashes << endl;
        }
    }

    for (int i = n / 2 - (1 + (n - 1) % 2); i >= 0; i--) {
        outDashes = repeat("-", (n - 1) / 2 - i);
        border = "*";

        if (i == 0) {
            if (n % 2 == 0) {
                border = "**";
            }
            cout << outDashes + border + outDashes << endl;
        }
        else {
            inDashes = repeat("-", i * 2);
            if (n % 2 == 1) {
                inDashes = repeat("-", i * 2 - 1);
            }
            cout << outDashes + border + inDashes + border + outDashes << endl;
        }
    }

    return 0;
}