题解 | #小乐乐算平均分#

import java.util.Scanner; public class Main { public static void main(String[] args) {

    Scanner scanner = new Scanner(System.in);
    double sum = 0.0, avg;
    for (int i = 0; i < 3; i++) 
        sum += scanner.nextDouble();
    avg = sum / 3;
    System.out.println(String.format("%.2f",sum) + " " + String.format("%.2f",avg));

    
}

}