In CSMA/CD, after the 4th collision, what is the probability that a node chooses K=5? The result K=5corresponds to a delay of how many seconds on a 100 Mbps Ethernet?
Answers
In CSMA/CD (Carrier Sense Multiple Access with Collision Detection), a protocol used in wired Ethernet networks, nodes listen for a carrier signal before transmitting data. If a collision occurs, nodes use a random backoff algorithm to determine a delay before attempting to retransmit.
The probability that a node chooses K=5 after the 4th collision is calculated using the binary exponential backoff algorithm. After n collisions, the backoff interval is chosen randomly from the range of [0, 2^n - 1]. In this case, n=4, so the range is [0, 2^4 - 1] = [0, 15]. The total number of possible values for K is 16 (0 to 15).The probability of choosing K=5 is the number of desired outcomes (K=5) divided by the total number of possible outcomes (16). So, the probability is 1/16, or approximately 0.0625 or 6.25%.
To calculate the delay associated with K=5 on a 100 Mbps Ethernet, we use the slot time for 100 Mbps Ethernet, which is 512 bit times. At 100 Mbps, the time it takes to transmit 1 bit is 1/(100 x 10^6) seconds.
The delay for K=5 is calculated as follows: Delay = K x Slot Time x Time per Bit = 5 x 512 x (1/(100 x 10^6)) seconds. This results in a delay of approximately 25.6 x 10^-6 seconds or 25.6 microseconds.
Learn more about binary here:
https://brainly.com/question/30226308
#SPJ11
Related Questions
which of the following would a cso not be responsible for? group of answer choices enforcing the firm's information security policy maintaining tools chosen to implement security educating and training users about security keeping management aware of security threats providing physical security
Answers
Physical security would not be the responsibility of a CSO (Chief Security Officer). A facility manager or security manager is often in charge of physical security.
Who is in charge of the company's information system security and is in charge of enforcing the company's information security policy?The overall cybersecurity and information security policy is the responsibility of the chief security officer (CSO) or chief information security officer (CISO), in partnership with the chief information officer (CIO).
Which of the following is not a reason why businesses are placing more emphasis on cooperation and teamwork?The rising emphasis on cooperation and collaboration in business is due to a number of factors, with the exception of the requirement for more effective work hierarchies.
To know more about securityvisit:-
https://brainly.com/question/15278726
#SPJ1
OBJECTIVE As a result of this laboratory experience, you should be able to accomplish Functions and proper handling of hand tools in automotive workshop Functions and proper handling of power tools in automotive workshop (5 Marks)
Answers
The objective of the laboratory experience is to develop the knowledge and skills necessary for performing functions and proper handling of hand tools and power tools in an automotive workshop.
In the laboratory experience, students will be exposed to various hand tools commonly used in an automotive workshop. They will learn about the functions of different hand tools such as wrenches, screwdrivers, pliers, and socket sets. The importance of proper handling, including correct gripping techniques, applying appropriate force, and ensuring tool maintenance and safety, will be emphasized. Students will also understand the specific applications of each tool and how to use them effectively for tasks like loosening or tightening fasteners, removing or installing components, and performing basic repairs.
Additionally, the laboratory experience will cover the functions and proper handling of power tools in an automotive workshop. Students will learn about power tools such as impact wrenches, drills, grinders, and pneumatic tools. They will gain knowledge on how to operate these tools safely, including understanding their power sources, selecting the right attachments or bits, and using them for tasks like drilling, grinding, sanding, or cutting. Proper safety measures, such as wearing personal protective equipment and following manufacturer guidelines, will be emphasized to ensure the safe and efficient use of power tools in the automotive workshop setting.
Overall, this laboratory experience aims to equip students with the necessary knowledge and skills to effectively and safely handle hand tools and power tools in an automotive workshop.
Learn more about pneumatic tools here:
https://brainly.com/question/31754944
#SPJ11
____ links are links to non-vlan-aware devices such as hubs and individual workstations.
Answers
Access links are links to non-VLAN-aware devices such as hubs and individual workstations.
In computer networking, VLANs (Virtual Local Area Networks) are used to logically separate a network into multiple broadcast domains. VLAN-aware devices can understand and process VLAN tags, allowing for the creation and management of VLANs.
On the other hand, non-VLAN-aware devices, such as hubs and individual workstations, are not capable of understanding VLAN tags. When connecting these devices to a network that uses VLANs, they are typically connected via access links. Access links do not carry VLAN tags and treat all incoming traffic as belonging to the default VLAN.
By connecting non-VLAN-aware devices to VLAN-aware devices (such as switches) using access links, the VLAN separation is maintained. VLAN-aware devices can handle the tagging and routing of traffic between VLANs, while non-VLAN-aware devices remain unaware of VLANs and function as usual within their own broadcast domain.
Therefore, access links are used for connecting non-VLAN-aware devices such as hubs and individual workstations to a VLAN network.
Learn more about VLAN here:
https://brainly.com/question/32092763
#SPJ11
Select the correct answer.
Mike needs to write the primary objectives of a project in a project plan. In which section should he write them?
A.
scope
B.
overview
c.
baselines
D.
schedule
Answers
Answer:
overviews
Explanation:
Is not recognized as an internal or external command, operable program or batch file.
Answers
Python Is not recognized as an internal or external command, operable program or batch file.
Which is not recognized as an internal or external?The “Python is known to be a program that is not seen as or is one that is not recognized as what we call an internal or external command”
Note that an error is said to be often encountered in the command prompt of the Windows. The error is said to be an outcome that is due to when Python's executable file is said to not found in the environment variable.
Therefore, Python Is not recognized as an internal or external command, operable program or batch file.
Learn more about operable program from
https://brainly.com/question/25327617
#SPJ1
Which range function creates the following list of numbers?
21 25 29 33 37 41
Group of answer choices
range(21, 44, 4)
range(21, 41)
range(21, 41, 4)
range(21, 44)
Answers
Note that the range function that creates the following list of numbers is: range(21, 44, 4) (Option A)
What is the rationale for the above response?The rationale for the above response is that the range function generates a sequence of numbers from a starting value to an ending value with a specific step size.
The list of numbers, "21 25 29 33 37 41", starts from 21 and increments by 4 until it reaches 44. Therefore, range(21, 44, 4) would generate this sequence of numbers.
The first argument is the starting value, the second argument is the ending value, and the third argument is the step size, which in this case is 4.
Learn more about range function:
https://brainly.com/question/29145252
#SPJ1
A 30V battery maintains a current through a 10 Ω Resistor. What is the current flow through the resistor?
Answers
Answer:
3 amps
Explanation:
because as per ohm's law. "electric current is proportional to voltage and inversely proportional to resistance"
3 amps because as per ohm's law. "electric current is proportional to voltage and inversely proportional to resistance".
What is Resistivity?Resistivity is the measure of an electrical conductor's resistance with a unit cross-sectional area and unit length. Any material's resistance can be used to distinguish it from other materials and to assess how well they carry electric currents. High resistance suggests little conductivity.
"The wire's resistivity changes, but its resistance does not," Stretching a copper wire causes its length to rise and its diameter to contract, which raises the wire's resistance but keeps the material's and temperature's resistivity constant.
The resistance of current in a wire is inversely related to the cross-sectional area of the wire and directly proportional to its length. This is,
R = (L rho)/A
Where
L stands for wire length.
A is the wire's cross-sectional area.
Resistivity, or rho,s a proportionality constant that is influenced by the wire's quality. In light of this, resistance and resistivity are connected by proportionality constant based on the composition of the substance.
Therefore, 3 amps because as per ohm's law. "electric current is proportional to voltage and inversely proportional to resistance".
Learn more about voltage on:
https://brainly.com/question/29445057
#SPJ2
A(n) _____ is a formal meeting between an employer and a job applicant
a.
background check
b.
gatekeeper
c.
interview
d.
personality test
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
C. Interview
Explanation:
Interview
Answer:
C. interview
Explanation:
edge 2022
Help debugging line 7 type error more arguments (5) than expected (1)
Answers
Answer:
import random
score = 0
for i in range(5):
num1 = random.randint(1, 100)
num2 = random.randint(1, 100)
prompt = "What is " + str(num1) + "+" + str(num2) + "?"
answer = int(input(prompt))
result = (num1, num2)
if answer == result:
print("Well done!")
score += 1
else:
print("incorrect")
print("Your score was", score)
Explanation:
Your error is on line 7, where you are providing multiple arguments to the input function, instead of 1.
One way to solve this is to create a variable prompt and concatenate all strings and variables within that variable to use for the input.
PLS ANSWER ASAP!!!!
In three to five sentences, explain the function of utilities.
Answers
Answer:
In economics, utility function is an important concept that measures preferences over a set of goods and services. Utility represents the satisfaction that consumers receive for choosing and consuming a product or service. Utility function is widely used in the rational choice theory to analyze human behavior.
Explanation:
A = 250; B = 325. which of the following statements is true? A ==B A>B A =B
Answers
Answer:
lollol
Explanation:
What is a named bit of programming instructions?
Answers
Answer:
Function: A named bit of programming instructions. Top Down Design: a problem solving approach (also known as stepwise design) in which you break down a system to gain insight into the sub-systems that make it up.
how is a trade off best described ?
dilema
compromise
demand
complication
Answers
How do i fix this? ((My computer is on))
Answers
Answer:
the picture is not clear. there could be many reasons of why this is happening. has your computer had any physical damage recently?
Answer:your computer had a Damage by u get it 101 Battery
and if u want to fix it go to laptop shop and tells him to fix this laptop
Explanation:
subscribe to twomad or you are cringe for the rest of your life kid
Answers
Answer:
What if I don't want to?..........
so i just went to play forge of empires and when i logged on to it all of my progress was gone and i was so far in to it
Answers
Answer:
That's tough...
Explanation:
Answer:
ok and?
Explanation:
This is not a question
each type of vpn service within rras can support up to a maximum of how many connections or ports?
Answers
Each type of VPN service within RRAS can support up to a maximum of 2048 connections or ports.
What is the maximum number of connections or ports supported by each type of VPN service in RRAS?Remote Access Service (RRAS) is a Microsoft Windows Server feature that allows remote users to connect to a network. RRAS supports three types of VPN services: Point-to-Point Tunneling Protocol (PPTP), and Secure Socket Tunneling Protocol (SSTP). Each of these VPN services has a maximum limit of 2048 connections or ports.
PPTP is an older VPN protocol that uses Point-to-Point Protocol (PPP) to create a secure connection between the client and the server. SSTP is a newer VPN protocol that uses Secure Sockets Layer (SSL) for encryption and can traverse firewalls and web proxies.
It's important to note that the maximum number of connections or ports that can be supported may vary depending on the hardware and software configuration of the server. Additionally, the performance of the VPN service may be affected as the number of connections or ports increases.
Learn more about Remote Access Service
brainly.com/question/31860803
#SPJ11
state the part of the internet that contains website
Answers
Which symbol is at the beginning and end of a multiline comment block? ### &&& %%% """
Answers
Answer:
A multiline block statement uses symbol "/*", "*/ " at the beginning and end respectively.
Explanation:
At the beginning of a multiline block comment /* symbol is used.
At the end of a multiline block comment */ symbol is used.
Thus, a multiline block statement uses symbol "/*", "*/ " at the beginning and end respectively.
Write a program that hardcodes a proposed password and checks that it is an acceptable password.
If the proposed password is acceptable password, the program writes a message "Password zzzzzzzzz is acceptable" and ends.
If it is not acceptable, it writes a message "Password is acceptable because it "
Where
is the password which was checked.
is one of:
"is not at least 7 characters long."
"does not contain both upper and lower case alphabetic characters."
"does not contain at least 1 digit."
is used if the PW is not acceptable, else the word not isn't printed.
"is an acceptable password."
Acceptable passwords:
are at least 7 characters long.
contain both upper and lower case alphabetic characters.
contain at least 1 digit.
The logic of this program can be quite tricky. Hint: use toUpperCase(), toLowerCase, and equals(). You will also need nested ifs.
Here some sample runs of the program; your output should look substantially the same:
C:\>java PasswordChecker
Enter your password:
snowflake
Password snowflake is not acceptable because it does not contain both upper and lower case alphabetic characters."
Enter your password:
SnowFlake
Answers
Using the knowledge in computational language in JAVA it is possible to write the code that write a program that hardcodes a proposed password and checks that it is an acceptable password.
Writting the code:
class InvalidPasswordException extends Exception {
int passwordConditionViolated = 0;
public InvalidPasswordException(int conditionViolated)
{
super("Invalid Password: ");
passwordConditionViolated = conditionViolated;
}
public String printMessage()
{
switch (passwordConditionViolated) {
case 1:
return ("Password length should be"
+ " between 8 to 15 characters");
case 2:
return ("Password should not"
+ " contain any space");
case 3:
return ("Password should contain"
+ " at least one digit(0-9)");
case 4:
return ("Password should contain at "
+ "least one special character");
case 5:
return ("Password should contain at"
+ " least one uppercase letter(A-Z)");
case 6:
return ("Password should contain at"
+ " least one lowercase letter(a-z)");
}
return ("");
}
}
See more about JAVA at brainly.com/question/12975450
#SPJ1
does anyone have a pdf of the greatest by eddie van der meer????
Answers
Answer
aight' so im finding it but i have to asnwer before someone else so look in the comments for it.
Explanation:
Just wait i getting it rn
why is graphics important in our life
Answers
Answer:
The quality of said graphics in technology allow us to see photos in high quality never seen before.
Explanation:
Carafano vs. MetroSplash (1-2 pages double spaced please)
Read the Carafano case and answer the following questions:
Question: What role did Matchmaker play in developing the content that was posted as a profile of Carafano?
Question: Was Matchmaker a content provider?
Question: Is Matchmaker liable?
Question: Why did Congress make ISPs immune from liability for material posted online by others under the Communications Decency Act?
Question: Can Carafano recover damages from anyone?
Question: A great deal of harm can be done very quickly on the Internet. Did Congress make the right policy decision when it passed the CDA?
Answers
In the Carafano vs. MetroSplash case, Matchmaker played a role in developing the content that was posted as a profile of Carafano. Matchmaker can be considered a content provider, and therefore, may be held liable. Congress made ISPs immune from liability for material posted online by others under the Communications Decency Act (CDA) to encourage free speech and innovation on the internet.
Carafano may be able to recover damages from Matchmaker if they can establish certain legal elements. While the internet can facilitate quick harm, the question of whether Congress made the right policy decision in passing the CDA is subjective and open to debate.
In the Carafano vs. MetroSplash case, Matchmaker played a role in developing the content that was posted as a profile of Carafano. Matchmaker provided the template for the profile, which was filled with information and images by its subscribers. This involvement suggests that Matchmaker acted as a content provider, contributing to the creation and dissemination of the content.
Considering Matchmaker's role as a content provider, the question of liability arises. Matchmaker may be held liable if it can be proven that the company knowingly or materially contributed to the unlawful or defamatory content. Liability would depend on the specific circumstances and evidence presented during the case.
Congress enacted the Communications Decency Act (CDA) to promote the growth of the internet and encourage free expression. One aspect of the CDA is Section 230, which grants immunity to internet service providers (ISPs) for content posted by others. The goal was to shield ISPs from liability and avoid potential chilling effects on internet speech and innovation. However, the CDA does not provide immunity for ISPs who actively participate in the development or creation of the content, potentially leaving room for liability.
Carafano may be able to recover damages from Matchmaker if they can establish certain legal elements, such as defamation, invasion of privacy, or intentional infliction of emotional distress. The outcome would depend on the specific facts of the case, the jurisdiction, and the application of relevant laws.
The question of whether Congress made the right policy decision in passing the CDA, considering the potential harm that can be done quickly on the internet, is subjective and open to debate. The CDA's immunity provisions have been criticized for potentially shielding platforms from responsibility for harmful or illegal content. On the other hand, the CDA's intent was to foster innovation and free speech online, providing a legal framework that balances the rights of internet users and service providers. The ongoing debate centers around finding the right balance between protecting individuals from harm and preserving the open nature of the internet.
Learn more about internet here: https://brainly.com/question/28347559
#SPJ11
All of the following are examples of database software except - Microsoft Access - MySQL - Oracle - Microsoft Excel
Answers
The database software that is not an example of database software is Microsoft Excel. Although Microsoft Excel can store data in a tabular format, it is not meant to manage big volumes of data, and it lacks the data security, transaction support, and scalability that specialist database software provides.
Database software includes Microsoft Access, MySQL, and Oracle. Microsoft Access is a desktop database management system, whereas MySQL and Oracle are relational database management systems for large organizations. MySQL is an open-source database, but Oracle is a commercial database with superior scalability, high availability, and security capabilities.
All three pieces of software are intended to manage enormous volumes of data efficiently, store and retrieve data fast, and give data analysis and reporting capabilities.
Learn more about Database software:
https://brainly.com/question/16989656
#SPJ11
Pls answer this
The figure above is a type of thread known as
A. Acme thread B. Buttress thread
C. Square thread D. Vee thread
Answers
Answer:
It looks like an Acme thread.
Explanation:
Please help!!!
I'm confused as to what I'm doing wrong! When the dog wrap around the third corner, it doesn't turn left, instead right. Could someone please help me out?
Answers
The most probable reason why your code for the dog turning right instead of is because your conditional statements are not satisfied.
What is Debugging?This refers to the identification and removal of errors in a given code or hardware component.
Hence, we can see that you should note that you are using teh ifElse conditional statement to execute your code and you stated that the dog would turn right if:
The left side is blocked If there are balls present.Therefore, there are balls present and also the left side is blocked which causes your dog to turn right because it is executing the else statement.
Read more about debugging here:
https://brainly.com/question/16813327
#SPJ1
If the cell to the right of the cell you are typing in is ________, the data can "bleed" over that cell.
A. Full
B. Numerical
C. Empty
D. Formatted
**ATTENTION** If you send me a file, or a link for something to download your answer will be reported. Please answer through text. Thank you!
Answers
When performing a Pre-Delivery Service, all of the following statements are correct, EXCEPT:
Select the correct option and click NEXT.
O Wearing jewelry, watches, and metal buckles should be avoided (or cover them)
Clothing with exposed zippers, buttons, or rivets should not be worn
Enough room around the vehicle should accommodate opening doors
When inspecting the engine compartment, fender covers are not really necessary
Answers
The incorrect statement in the given options is: "When inspecting the engine compartment, fender covers are not really necessary."
During a Pre-Delivery Service, fender covers are indeed necessary when inspecting the engine compartment. Fender covers provide protection to the vehicle's fenders and other components from accidental scratches or damage caused by tools or other objects that may come in contact with them. They act as a barrier and help maintain the condition of the vehicle's exterior.
Wearing jewelry, watches, and metal buckles should be avoided or covered to prevent scratching or damaging the vehicle's surface. Clothing with exposed zippers, buttons, or rivets should also be avoided as they can potentially cause scratches.
Having enough room around the vehicle is important to allow for the opening of doors and accessibility to various components during the inspection process.
In summary, all the given statements are correct except for the statement that suggests fender covers are unnecessary when inspecting the engine compartment during a Pre-Delivery Service.
For more questions on Pre-Delivery Service, click on:
https://brainly.com/question/31863225
#SPJ8
What's a lossles compression algorithm
Answers
write a program (in main.cpp) to do the following: a. build a binary search tree t1. b. do a postorder traversal of t1 and, while doing the postorder traversal, insert the nodes into a second binary search tree t2 . c. do a preorder traversal of t2 and, while doing the preorder traversal, insert the node into a third binary search tree t3. d. do an inorder traversal of t3. e. output the heights and the number of leaves in each of the three binary search trees.
Answers
Answer:
#include <iostream>
using namespace std;
struct TreeNode
{
int value;
TreeNode *left;
TreeNode *right;
};
class Tree
{
private:
TreeNode *root;
void insert(TreeNode *&, TreeNode *&);
void destroySubTree(TreeNode *);
void deleteNode(int, TreeNode *&);
void makeDeletion(TreeNode *&);
void displayInOrder(TreeNode *) const;
void displayPreOrder(TreeNode *) const;
void displayPostOrder(TreeNode *) const;
int height(TreeNode *) const;
int nodeCount(TreeNode *) const;
int leafCount(TreeNode *) const;
public:
Tree()
{ root = NULL; }
~Tree()
{ destroySubTree(root); }
void insertNode(int);
bool searchNode(int);
void remove(int);
void displayInOrder() const
{ displayInOrder(root); }
void displayPreOrder() const
{ displayPreOrder(root); }
void displayPostOrder() const
{ displayPostOrder(root); }
int height() const
{ return height(root); }
int nodeCount() const
{ return nodeCount(root); }
int leafCount() const
{ return leafCount(root); }
};
void Tree::insert(TreeNode *&nodePtr, TreeNode *&newNode)
{
if (nodePtr == NULL)
nodePtr = newNode;
else if (newNode->value < nodePtr->value)
insert(nodePtr->left, newNode);
else
insert(nodePtr->right, newNode);
}
void Tree::insertNode(int num)
{
TreeNode *newNode;
newNode = new TreeNode;
newNode->value = num;
newNode->left = newNode->right = NULL;
insert(root, newNode);
}
void Tree::destroySubTree(TreeNode *nodePtr)
{
if (nodePtr)
{
if (nodePtr->left)
destroySubTree(nodePtr->left);
if (nodePtr->right)
destroySubTree(nodePtr->right);
delete nodePtr;
}
}
void Tree::deleteNode(int num, TreeNode *&nodePtr)
{
if (num < nodePtr->value)
deleteNode(num, nodePtr->left);
else if (num > nodePtr->value)
deleteNode(num, nodePtr->right);
else
makeDeletion(nodePtr);
}
void Tree::makeDeletion(TreeNode *&nodePtr)
{
TreeNode *tempNodePtr;
if (nodePtr == NULL)
cout << "Cannot delete empty node.\n";
else if (nodePtr->right == NULL)
{
tempNodePtr = nodePtr;
nodePtr = nodePtr->left;
delete tempNodePtr;
}
else if (nodePtr->left == NULL)
{
tempNodePtr = nodePtr;
nodePtr = nodePtr->right;
delete tempNodePtr;
}
else
{
tempNodePtr = nodePtr->right;
while (tempNodePtr->left)
tempNodePtr = tempNodePtr->left;
tempNodePtr->left = nodePtr->left;
tempNodePtr = nodePtr;
nodePtr = nodePtr->right;
delete tempNodePtr;
}
}
void Tree::remove(int num)
{
deleteNode(num, root);
}
bool Tree::searchNode(int num)
{
TreeNode *nodePtr = root;
while (nodePtr)
{
if (nodePtr->value == num)
return true;
else if (num < nodePtr->value)
nodePtr = nodePtr->left;
else
nodePtr = nodePtr->right;
}
return false;
}
void Tree::displayInOrder(TreeNode *nodePtr) const
{
if (nodePtr)
{
displayInOrder(nodePtr->left);
cout << nodePtr->value << endl;
displayInOrder(nodePtr->right);
}
}
void Tree::displayPreOrder(TreeNode *nodePtr) const
{
if (nodePtr)
{
cout << nodePtr->value << endl;
displayPreOrder(nodePtr->left);
displayPreOrder(nodePtr->right);
}
}
void Tree::displayPostOrder(TreeNode *nodePtr) const
{
if (nodePtr)
{
displayPostOrder(nodePtr->left);
displayPostOrder(nodePtr->right);
cout << nodePtr->value << endl;
}
}
int Tree::height(TreeNode *nodePtr) const
{
if (nodePtr == NULL)
return 0;
else
{
int lHeight = height(nodePtr->left);
int rHeight = height(nodePtr->right);
if (lHeight > rHeight)
return (lHeight + 1);
else
return (rHeight + 1);
}
}
int Tree::nodeCount(TreeNode *nodePtr) const
{
if (nodePtr == NULL)
return 0;
else
return (nodeCount(nodePtr->left) + nodeCount(nodePtr->right) + 1);
}
int Tree::leafCount(TreeNode *nodePtr) const
{
if (nodePtr == NULL)
return 0;
else if (nodePtr->left == NULL && nodePtr->right == NULL)
return 1;
else
return (leafCount(nodePtr->left) + leafCount(nodePtr->right));
}
int main()
{
Tree tree;
int num;
cout << "Enter numbers to be inserted in the tree, then enter -1 to stop.\n";
cin >> num;
while (num != -1)
{
tree.insertNode(num);
cin >> num;
}
cout << "Here are the values in the tree, listed in order:\n";
tree.displayInOrder();
cout << "Here are the values in the tree, listed in preorder:\n";
tree.displayPreOrder();
cout << "Here are the values in the tree, listed in postorder:\n";
tree.displayPostOrder();
cout << "Here are the heights of the tree:\n";
cout << tree.height() << endl;
cout << "Here are the number of nodes in the tree:\n";
cout << tree.nodeCount() << endl;
cout << "Here are the number of leaves in the tree:\n";
cout << tree.leafCount() << endl;
return 0;
}