Perfect 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;

    for (int i = 0; i < n; i++) {
        cout << repeat(" ", (n - (i + 1))) + '*' + repeat("-*", i) << endl;
    }

    for (int i = n - 2; i >= 0; i--) {
        cout << repeat(" ", (n - (i + 1))) + '*' + repeat("-*", i) << endl;
    }

    return 0;
}