import java.util.Scanner;

class SymmMatrixCheck {

    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the number of rows in the matrix: ");
        int m = sc.nextInt();
        System.out.print("Enter the number of colums in the matrix: ");
        int n = sc.nextInt();

        int a[][] = new int[m][n];
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < n; j++) {
                System.out.print(
                    "Enter the element at (" + i + "," + j + "): "
                );
                a[i][j] = sc.nextInt();
            }
        }

        boolean isSymmetric = true;
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < n; j++) {
                if (i != j && a[i][j] != a[j][i]) {
                    isSymmetric = false;
                    break;
                }
            }
            if (!isSymmetric) {
                break;
            }
        }

        if (isSymmetric) {
            System.out.println("The matrix is symmetric.");
        } else {
            System.out.println("The matrix is not symmetric.");
        }
    }
}