2446번

#include<iostream>
using namespace std;

int main()
{
	int cnt;
	int n = 0;
	cin >> n;

	cnt = (n * 2) - 1;
	for (int i = 0; i < n-1; i++)
	{
		for (int j=0;j<i;j++)
		{
			cout << ' ';
		}
		for (int j = 0; j < cnt; j++)
		{
			cout << '*';
		}
		cnt = cnt - 2;
		cout << '\n';
	}

	cnt = 1;
	for (int i = 0; i < n; i++)
	{
		for (int j = n - 1; j > i; j--)
		{
			cout << ' ';
		}
		for (int j = 0; j < cnt; j++)
		{
			cout << '*';
		}
		cnt = cnt + 2;
		cout << '\n';
	}
	
	
}