import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int m = scanner.nextInt();
        int[] arr1 = new int[n * m];
        int[] arr2 = new int[n * m];
        for(int i = 0; i < n * m; i++){
            arr1[i] = scanner.nextInt();
        }
        for(int i = 0; i < n * m; i++){
            arr2[i] = scanner.nextInt();
        }
        Matrix m1 = new Matrix(arr1, n, m);
        Matrix m2 = new Matrix(arr2, n, m);
        Matrix m3 = m1.add(m2);
        m3.print();
    }
}