/*
  Requirements: StdIn.java
*/
public class Average
{

    public static void main(String [] args)
    {
	
	int num_read = 0;
	int sum = 0;

	//Read in integers until there is nothing
	//left on Standard Input
	while(!(StdIn.isEmpty()))
	{
	    int value = StdIn.readInt();
	    sum = sum + value;
	    num_read++;
	}

	if(num_read > 0)
	{
	    double average = sum/(double)num_read;
	    System.out.println("Average: " + average);
	}
	else
	    System.out.println("No input provided");
    }
}