import java.io.*;

//-------------------------------------------------------------------
// Program P2 Q4
// 
// This program prompts users for a series of positive numbers, and
// calculates the mean, maximum and minimum of these numbers.
//
// Author : Wei Tsang Ooi
// Date   : 11 July 1999
//-------------------------------------------------------------------

class MeanMaxMin {

	static double sum = 0;     // sum of all values entered so far
	static double count = 0;   // how many numbers is entered so far
	static double min = Double.MAX_VALUE; // minimum so far
	static double max = Double.MIN_VALUE; // maximum so far


	//---------------------------------------------------------------
	// intro
	// 
	// print an introduction message.
	//---------------------------------------------------------------

	private static void intro() 
	{
		System.out.print("I will ask for a series of numbers, and " +
		                 "find out the average value, minimum value " +
						 "and maximum value.\n");
	}

	//---------------------------------------------------------------
	// getInput
	// 
	// input : stdin - BufferedReader to read input from
	//         msg - message to prompt the user with
	// return : a double value input by user, guranteed to be 
	//           greater than zero.
	//---------------------------------------------------------------

	private static double getInput(BufferedReader stdin, String msg) 
		throws IOException
	{
		System.out.print(msg);
		double input = Double.valueOf(stdin.readLine()).doubleValue();
		return input;
	}


	//---------------------------------------------------------------
	// updateStats
	// 
	// input : input - a number input by users
	// 
	// This method updates the member min, max, sum, and count .
	//---------------------------------------------------------------

	private static void updateStats(double input) throws IOException
	{
		if (input < min)
			min = input;
		if (input > max)
			max = input;
		sum += input;
		count++;
	}


	//---------------------------------------------------------------
	// printStats
	// 
	// This method prints the mean, min, and max of the numbers
	// entered by user
	//---------------------------------------------------------------
	
	private static void printStats()
	{
		if (count == 0)
			System.out.println("Nothing is entered.");
		else {
			System.out.println("Here are the statistics :");
			System.out.println("Mean : " + sum/count);
			System.out.println("Min  : " + min);
			System.out.println("Max  : " + max);
		}
	}


	//---------------------------------------------------------------
	// main
	// 
	// Keep reading values from user, until a 0 is entered. Then
	// print out the average, min and max value of the values entered.
	//---------------------------------------------------------------

	public static void main(String argv[]) throws IOException
	{
		intro ();

		BufferedReader stdin = new BufferedReader
			(new InputStreamReader(System.in));

		double input = getInput(stdin, "Enter a number [0 to quit] :");

		while (input != 0) {
			updateStats(input);
			input = getInput(stdin, "Enter a number [0 to quit] :");
		}
		printStats();
	}
}