using System;
 
namespace inputAverage
{
	class mainClass
	{
		static void Main()
		{
			Console.WriteLine ("Don't enter letters or blanks. Or else.\n");


			Console.WriteLine ("How many grades would you like to input?");
			getInput( );
		}
 
		static void getInput( )
		{
			int userInput = 0,
				loopAmount = 0,
				Total = 0,
				Output = 0,
				Devisor = 0;
 
			loopAmount = (int.Parse (Console.ReadLine()));
			Devisor = loopAmount;
                        
			while (loopAmount > 0)
			{
				Console.WriteLine ("\nGive me grade #" + (loopAmount));
				userInput = (int.Parse (Console.ReadLine()));
				loopAmount--;
				Total += userInput;
                         
				if (loopAmount <= 0)
				{
					Output = Total / Devisor;
					Console.WriteLine ("\nAverage grade is: " + (Output));
					Console.ReadLine ( );
					break;
				}
			}
		}
	}
}