/*
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 */
package Media;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 *
 * @author DavidDager
 */
public class Media {

    /**
     * @param args the command line arguments
     * @throws java.io.IOException
     */
    public static void main(String[] args) throws IOException {
        BufferedReader entrada = new BufferedReader(new InputStreamReader(System.in));
        double contador = 1, total = 0, media;
        String nota;

        for (int i = 0; i < 5; i++) {
            System.out.println("\nTeclee calificación (A,B,C,D,E): ");
            nota = entrada.readLine();
            nota = nota.toUpperCase();

            switch(nota) {
                case "A":
                    total += 4;
                    break;
                case "B":
                    total += 3;
                    break;
                case "C":
                    total += 2;
                    break;
                case "D":
                    total += 1;
                    break;
                case "E":
                    total += 0;
                    break;
            }

        }

        contador += 1;
        media  = total / 5;
        System.out.println ("\n\nEl promedio del grupo es: " + media);
    }

}