Grandpa Stavri

import java.util.Scanner;

public class GrandpaStavri {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int days = Integer.parseInt(scanner.nextLine());
        double liter = 0;
        double degree = 0;
        double sumL = 0;
        double sumD = 0;

        for (int i = 0; i < days * 2; i++) {
            double num = Double.parseDouble(scanner.nextLine());
            if (i % 2 == 0) {
                liter = num;
                sumL += liter;
            } else {
                degree = num;
                sumD += liter * degree;
            }
        }
        double averageD = sumD / sumL;
        System.out.printf("Liter: %.2f%nDegrees: %.2f%n", sumL, averageD);
        if (averageD < 38) {
            System.out.println("Not good, you should baking!");
        } else if (averageD >= 38 && averageD <= 42) {
            System.out.println("Super!");
        } else {
            System.out.println("Dilution with distilled water!");
        }
    }

}