//
//	...
// Run: cmd < data.txt
//
import java.text.DecimalFormat;
import java.util.Scanner;

class TwoStudentAvg
{
	public static void main(String[] args)
	{
		DecimalFormat f1 = new DecimalFormat("0.0");
		Scanner input = new Scanner(System.in);
		double score1, score2, score3, scoreavg;
		String studentName,dummy;

		score1 = input.nextDouble();
		score2 = input.nextDouble();
		score3 = input.nextDouble();
		dummy = input.nextLine();
		studentName = input.nextLine();

		scoreavg = (score1 + score2 + score3)/3.;
		System.out.println( studentName + "'s average is: " +
												f1.format(scoreavg));

		score1 = input.nextDouble();
		score2 = input.nextDouble();
		score3 = input.nextDouble();
		dummy = input.nextLine();
		studentName = input.nextLine();

		scoreavg = (score1 + score2 + score3)/3.;
		System.out.println(studentName + "'s average is: " +
												f1.format(scoreavg)+"\n\n\n");
	}
}