import java.util.Scanner;

public class ExamScoreEvaluator {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        double exam1 = scanner.nextDouble();

        double exam2 = scanner.nextDouble();

        double exam3 = scanner.nextDouble();

        // Calculate the average score

        long averageScore = (long)(exam1 + exam2 + exam3) / 3;

        // Classify the student based on the average score

        String classification;

        if (averageScore >= 90) {

            classification = "Excellent";

        } else if (averageScore >= 80) {

            classification = "Good";

        } else if (averageScore >= 60) {

            classification = "Pass";

        } else {

            classification = "Fail";

        }

        // Display the result

        System.out.println("Average score: " + averageScore+"\nClassification: " + classification);

        scanner.close();

    }

}