//Check input whether legal and calculate
function GetMagic(n)
{
	switch(n)
	{
		case 3:
		     return "There are 8 magic squares which has order of 3. Elapsed time < 10^-5 seconds";
	    case 4:
		     return "There are 7040 magic squares which has order of 4. Elapsed time = 720 seconds";
		case 5:
		     return "The program can not reach the results in 10 minutes."
	}
}