import java.io.*;

public class ArrayProduct
{
	public static void main (String[] args)
	{
		int a[]={10,9,8,7,3,4,5,6};
		Fun f= new Fun();
		System.out.println(f.multi(a, a.length));		
		try
		{
			byte bb = (byte )System.in.read();
		}catch(IOException e){}
	}
}

class Fun
{
	int multi(int a[], int n)
	{
		if(n == 0)
			return 1;
		else
			return multi(a,n-1)*a[n-1];
	}	
}