try:
    m, n = map(int, input().split())
    if m <= 0 or n <= 0:
        print("Invalid Input")
    else:
        matrix1 = [list(map(int, input().split())) for _ in range(m)]
        matrix2 = [list(map(int, input().split())) for _ in range(m)]
        result = [[matrix1[i][j] + matrix2[i][j] for j in range(n)] for i in range(m)]
        for row in result:
            print(*row)
except ValueError:
    print("Invalid Input")