can you help me change this trendtracker.cpp so it only utilizes the libraries that are in the header file or main.cpp$.$ so you can only utilize

#include

#include

$--------$trendtracker.h$---------$

#ifndef TRENDTRACKER$\_$H

#define TRENDTRACKER$\_$H

$//$You may not include any additional libraries for this assignment,

$//$other than those listed below.

#include

#include

using namespace std;

class Trendtracker

$\{$

$//$ For the mandatory running times below:

$//$ n is the number of hashtags in the Trendtracker.

public:

$//$ Creates a new Trendtracker tracking no hashtags.

$//$

$//$ Must run in O$(1)$ time.

Trendtracker$()$;

$//$ Inserts a hashtag $($tweeted $0$ times$)$ into the Trendtracker.

$//$ If the hashtag already is in Trendtracker, does nothing.

$//$

$//$ Must run in O$($n$)$ time.

void insert$($string ht$)$;

$//$ Return the number of hashtags in the Trendtracker.

$//$

$//$ Must run in O$(1)$ time.

int size$()$;

$//$ Adds $1$ to the total number times a hashtag has been tweeted.

$//$ If the hashtag does not exist in TrendTracker, does nothing.

$//$

$//$ Must run in O$($n$)$ time.

void tweeted$($string ht$)$;

$//$ Returns the number of times a hashtag has been tweeted.

$//$ If the hashtag does not exist in Trendtracker, returns $-1.$

$//$

$//$ Must run in O$($n$)$ time.

int popularity$($string name$)$;

$//$ Returns a most$-$tweeted hashtag.

$//$ If the Trendtracker has no hashtags, returns $"".$

$//$

$//$ Must run in O$($n$)$ time.

string top$\_$trend$()$;

$//$ Fills the provided vector with the $3$ most$-$tweeted hashtags,

$//$ in order from most$-$tweeted to least$-$tweeted.

$//$

$//$ If there are fewer than $3$ hashtags, then the vector is filled

$//$ with all hashtags $($in most$-$tweeted to least$-$tweeted order$).$

$//$

$//$ Must run in O$($n$)$ time.

void top$\_$three$\_$trends$($vector& T$)$;

$//$ Remove the given hashtag from the trendtracker.

$//$

$//$ Must run in O$($n$)$ time.

void remove$($string ht$)$;

$//$ Fills the provided vector with the k most$-$tweeted hashtags,

$//$ in order from most$-$tweeted to least$-$tweeted.

$//$

$//$ If there are fewer than k hashtags, then the vector is filled

$//$ with all hashtags $($in most$-$tweeted to least$-$tweeted order$).$

$//$

$//$ Must run in O$($nk$)$ time.

void top$\_$k$\_$trends$($vector& T$,$ int k$)$;

private:

$//$ A simple class representing a hashtag and

$//$ the number of times it has been tweeted.

class Entry

$\{$

public:

string hashtag;

int pop;

$\}$;

$//$ Entries containing each hashtag and its popularity.

vector E;

$\}$;

#endif

$----$trendtracker.cpp$--------$

#include "trendtracker.h$"$

#include

Trendtracker::Trendtracker$()\{$

E$.$clear$()$;

$\}$

void Trendtracker::insert$($string ht$)\{$

for $($Entry& entry : E$)\{$

if $($entry$.$hashtag $==$ ht$)\{$

return;

$\}$

$\}$

Entry newEntry;

newEntry.hashtag $=$ ht;

newEntry.pop $=0$;

E$.$push$\_$back$($newEntry$)$;

$\}$

int Trendtracker::size$()\{$

return E$.$size$()$;

$\}$

void Trendtracker::tweeted$($string ht$)\{$

for $($Entry& entry : E$)\{$

if $($entry$.$hashtag $==$ ht$)\{$

entry.pop$++$;

return;

$\}$

$\}$

$\}$

int Trendtracker::popularity$($string ht$)\{$

for $($const Entry& entry : E$)\{$

if $($entry$.$hashtag $==$ ht$)\{$

return entry.pop;

$\}$

$\}$

return $-1$;

$\}$

string Trendtracker::top$\_$trend$()\{$

if $($E$.$empty$())\{$

return $""$;

$\}$

int maxPop $=$ E$[0].$pop;

string topHashtag $=$ E$[0].$hashtag;

for $($const Entry& entry : E$)\{$

if $($entry$.$pop $>$ maxPop$)\{$

maxPop $=$ entry.pop;

topHashtag $=$ entry.hashtag;

$\}$

$\}$

return topHashtag;

$\}$

void Trendtracker::top$\_$three$\_$trends$($vector& T$)\{$

sort$($E$.$begin$(),$ E$.$end$(),[]($const Entry& a$,$ const Entry& b$)\{$

return a$.$pop $>$ b$.$pop;

$\})$;

T$.$clear$()$;

for $($const Entry& entry : E$)\{$

T$.$push$\_$back$($entry$.$hashtag$)$;

if $($T$.$size$()>=3)\{$

break;

$\}$

$\}$

$\}$

void Trendtracker::remove$($string ht$)\{$

for $($auto it $=$ E$.$begin$()$; it $!=$ E$.$end$()$; $++$it$)\{$

if $($it$->$hashtag $==$ ht$)\{$

E$.$erase$($it$)$;

break;

$\}$

$\}$

$\}$

void Trendtracker::top$\_$k$\_$trends$($vector& T$,$ int k$)\{$

sort$($E$.$begin$(),$ E$.$end$(),[]($const Entry& a$,$ const Entry& b$)\{$

return a$.$pop $>$ b$.$pop;

$\})$;

T$.$clear$()$;

for $($const Entry& entry : E$)\{$

T$.$push$\_$back$($entry$.$hashtag$)$;

if $($T$.$size$()>=$ k$)\{$

break;

$\}$

$\}$

$\}$