class fact
{
	public static void main(String arg[ ])
	{
		for(int i = 0; i <= 10; i++)
		{    
			System.out.println( i + "! : " + factorial(i));
		}    
	}

	public static long  factorial( int n )
	{
		long f = 1;	
		if (n > 1)
		{
			int aux = n;
			while (aux > 1)   
			{
				f = f * aux; 
				aux--;
			}
		}

		return f;
	}
}