#include <iostream>
using namespace std;

int main(void)
{
	int rows;
	cout << "How many rows?\n";
	cin >> rows;
	cout << endl;
	for(int i = 0; i < rows; i++){
		for(int x = 0; x <= i; x++){
			cout << "*";
		}
		cout << endl;
}
	cout << endl;
return 0;
}