import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Back_2738 {
    public static void main(String[] args) throws IOException {

        // given
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        // 행
        int N = Integer.parseInt(st.nextToken());
        // 열
        int M = Integer.parseInt(st.nextToken());
        int A[][] = new int[N][M];
        int B[][] = new int[N][M];
        int sum[][] = new int[N][M];    // 0,1,2 행열의 합 (A+B)
        for (int i = 0; i < N; i++) {
            st = new StringTokenizer(br.readLine());
            for (int j = 0; j < M; j++) {
                A[i][j] = Integer.parseInt(st.nextToken());
            }
        }
        for (int i = 0; i < N; i++) {
            st = new StringTokenizer(br.readLine());
            for (int j = 0; j < M; j++) {
                B[i][j] = Integer.parseInt(st.nextToken());
            }
        }
        // when
        for (int i = 0; i < N; i++) {
            for (int j = 0; j < M; j++) {
                sum[i][j] = A[i][j] + B[i][j];
            }
        }
        // then
        for (int i = 0; i < N; i++) {
            for (int j = 0; j < M; j++) {
                System.out.print(sum[i][j]+" ");
            }
            System.out.println();
        }
        br.close();
    }
}