#include <iostream>    // [1 mark]
using namespace std;
 
int main() {
    int rows;
 
    cout << "Enter number of rows: ";  // [1 mark]
    cin >> rows;                       // [1 mark]
 
    for (int i = 1; i <= rows; ++i) {                      // [2 marks] - Outer loop
        for (int space = 1; space <= rows - i; ++space) {  // [2 marks] - Leading spaces
            cout << " ";
        }
        for (int j = 1; j <= 2 * i - 1; ++j) {              // [3 marks] - Stars per row
            cout << "*";
        }
        cout << endl;                                      // [1 mark] - New line per row
    }
 
    return 0;
}
 

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