//
//  use < for file input
//

import java.util.Scanner;

class TwoStu
{
	public static void main(String[] args)
	{
		Scanner input = new Scanner(System.in);
		String n1, n2;
		double s1, s2;
		String dummy;
		double avg;

		n1 = input.nextLine();
		s1 = input.nextDouble();
		dummy = input.nextLine();

		n2 = input.nextLine();
		s2 = input.nextDouble();

		avg = (s1 + s2)/2;

		System.out.println("n1 = " + n1);
		System.out.println("s1 = " + s1);
		System.out.println("n2 = " + n2);
		System.out.println("s2 = " + s2);

		System.out.println("\n\nAVG = " + avg + "\n\n\n");
	}
}