Ex2

import java.util.Scanner;

public class Ex2 {

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

        int r = scanner.nextInt();
        int c = scanner.nextInt();

        int[][] arr = new int[r][c];

        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr[i].length; j++) {
                arr[i][j] = scanner.nextInt();
            }
        }

        double sum = 0;
        String name = "";
        int space;

        for (int i = 0; i < arr.length; i++) {
            sum = 0;
            for (int j = 0; j < arr[i].length; j++) {
                name = String.valueOf(arr[i][j]);
                space = name.length();
                for (int k = 0; k < 10-space; k++) {
                    System.out.print(" ");
                }
                System.out.print(arr[i][j]);
                sum+=arr[i][j];
            }

            double average = sum/arr[i].length;

            name = String.valueOf(average);
            String all = "";
            String[] test = name.split("");

            for (int j = 0; j < name.length(); j++) {
                if(test[j].equals(".")){
                    for (int k = 0; k < j+3; k++) {
                        all+=test[i] ;
                    }
                }
            }
            space = all.length();

            if(test.length == 3){
                if(test[2].equals("0")){
                    for (int k = 0; k < 9; k++) {
                        System.out.print(" ");
                    }
                    System.out.printf("%.0f",average);
                    System.out.println();
                }else{
                    for (int k = 0; k < 7; k++) {
                        System.out.print(" ");
                    }
                    System.out.printf("%.1f",average);
                    System.out.println();
                }
            }else{
                for (int k = 0; k < 10-space; k++) {
                    System.out.print(" ");
                }
                System.out.printf("%.2f",average);
                System.out.println();
            }
        }
    }
}