#include <iostream>
using namespace std;

void displayRow(int n)
{
for (int i = 1; i <= n; i++)
cout << '*';
cout << endl;
}
int main()
{
int m;

cout << "Enter a positive integer: ";
cin >> m;

for (int j=1; j <= m; j++)
displayRow(j);
return 0;
}