package com.company;
import java.util.Scanner;
public class Main {
    static int enter(int max, int min) {
        Scanner scanner = new Scanner(System.in);
        int temp = 0;
        boolean iscorrect = true;
        do {
            try {
                temp = scanner.nextInt();
                if ((temp > min -1) && (temp < max + 1)) {
                    iscorrect = false;
                }
                else {
                    System.out.println("This is a mistake. Please enter again!");
                }
            }catch (Exception e) {
                scanner.nextLine();
                System.out.println("This is a mistake. Please enter again!");
                iscorrect = true;
            }
        }
        while (iscorrect);
        return temp;
    }
    public static void main(String[] args) {
        int[][] matrix1 = new int[10][10];
        int[][] matrix2 = new int[10][10];
        int flag;
        int n;
        System.out.print("Enter the number of rows and columns in the matrix (N > 1 and N < 11) = ");
        n = enter(10,2);
        System.out.print("Enter the elements of first matrix a");
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++ ) {
                System.out.print("Enter a[" + (i + 1) + "," + (j + 1) + "] = ");
                matrix1[i][j] = enter(200000,-200000);
            }
        }
        System.out.print("Enter the elements of first matrix b");
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++ ) {
                System.out.print("Enter b[" + (i + 1) + "," + (j + 1) + "] = ");
                matrix2[i][j] = enter(200000,-200000);
            }
        }
        System.out.print("Enter 1 for sum or 2 for subtract matrices ");
        flag = enter(2,1);
        if (flag == 1) {
            for (int i = 0; i < n; i++) {
                for (int j = 0; j < n; j++ ) {
                    matrix1[i][j] = matrix1[i][j] + matrix2[i][j];
                }
            }
        }
        else {
            for (int i = 0; i < n; i++) {
                for (int j = 0; j < n; j++ ) {
                    matrix1[i][j] = matrix1[i][j] - matrix2[i][j];
                }
            }
        }
        System.out.print("New matrix");
        for (int i = 0; i < n; i++) {
            System.out.println();
            for (int j = 0; j < n; j++ ) {
                System.out.print(matrix1[i][j] +  "  ");
            }
        }
    }
}