import java.util.Scanner;
public class dvodimpolja1 {

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

        System.out.print("Unesi parametar a kvadratne matrice: ");
        int a = input.nextInt();

        int niz[][] = new int[a][a];

        System.out.print("unesi clanove kvadratne matrice ");
        for (int i = 0; i < niz.length; i++) {
            for (int j = 0; j < niz[i].length; j++) {
                System.out.print("x[" +i+ "," +j +"]"+ "-->");
                niz[i][j] = input.nextInt();
            }
        }
        for (int i = 0; i < niz.length; i++) {
            System.out.println();
            for (int j = 0; j < niz[i].length; j++) {
                System.out.print(niz[i][j] + " ");
            }
        }
        System.out.println();
        System.out.print("clanovi koji se nalaze na glavnoj dijagonali su: ");
        for (int i = 0; i < niz.length; i++)
            for (int j = 0; j < niz[i].length; j++)
                if (i == j)
                    System.out.print(niz[i][j] + " ");
    }
}