ertgh

import java.util.*;

public class Main {
    public static void main(String[] args) {
        int a[][] = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } }; /// arrayakam drwst krd
        Stack<Integer> b = new Stack<Integer>();
        for (int i = 0; i < a.length; i++) {
            for (int j = 0; j < a[i].length; j++) { //// bamloopa achyna sar dana danay zhmarakany naw loopaka
                //// a[i][j] aw zhmarayaya ka la naw arrayaka haya
                b.push(a[i][j]); /// har yak la zhmarakanman xsta naw stack aka
            }
        }

        while (!b.isEmpty()) { //// loopek boy nrxy naw stack aka print kayn
            System.out.println(b.pop());
        }

    }
}