#include <iostream>
#include <string>
#include <sys/wait.h>
#include <unistd.h>
#include <vector>
#include <queue>
#include <pthread.h>

using namespace std;

class DatabaseRequest
{
public:
int group;
int id;
int position;
int time;
int duration;
};

int startingGroup;
int totalFromStartingGroup = 0;
int finishedStartingGroup = 0;

vector<pthread_cond_t> conds;
vector<pthread_cond_t> condsPos;
queue<int> waitingIDs;
queue<int> waitingPos;
int positions[10];
int userPos[10];
queue<int> waitPos[10];
int printed = 0;

int group1Count = 0;
int group2Count = 0;
int waitDueToGroup = 0;
int waitDueToPosition = 0;

//pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

vector<pthread_mutex_t> locks;
pthread_mutex_t lock1 = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t lock2 = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t lock3 = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t lock4 = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t lock5 = PTHREAD_MUTEX_INITIALIZER;

int waitIndex = 0;

void update(int a) {
pthread_mutex_lock(&lock2);
totalFromStartingGroup += a;
pthread_mutex_unlock(&lock2);
}

void updateGroupWait() {
pthread_mutex_lock(&lock5);
waitDueToGroup += 1;
pthread_mutex_unlock(&lock5);
}

void updatePositionWait() {
pthread_mutex_lock(&lock5);
waitDueToPosition += 1;
pthread_mutex_unlock(&lock5);
}

void addToWait(int a) {
pthread_mutex_lock(&lock3);
waitingIDs.push(a);
pthread_mutex_unlock(&lock3);
}

void updatePosition(int pos, int value, int id) {
pthread_mutex_lock(&lock4);
positions[pos] += value;
userPos[pos] = id;
pthread_mutex_unlock

Question 1 Write a one page report on dataset. Explain the followi...