Mnogu glupa zadaca

#include <iostream>
#include <cstring>
using namespace std;

class List{
private:
    int * broevi;
    int broj_elementi;
public:
    List(){};
    List(int * broevi,int broj_elementi)
    {
        this->broj_elementi=broj_elementi;
        this->broevi = new int [broj_elementi];
        for(int i=0;i<broj_elementi;i++)
        {
            this->broevi[i]=broevi[i];
        }
    }
    List(const List &l)
    {
        this->broj_elementi=l.broj_elementi;
        this->broevi = new int [l.broj_elementi];
        for(int i=0;i<broj_elementi;i++)
        {
            this->broevi[i]=l.broevi[i];
        }
    }
    List &operator=(const List &l)
    {
        if(this!=&l)
        {
        delete [] broevi;
        this->broj_elementi=l.broj_elementi;
        this->broevi = new int [l.broj_elementi];
        for(int i=0;i<broj_elementi;i++)
        {
            this->broevi[i]=l.broevi[i];
        }
        }
            return *this;
    }
    int sum()
    {
        int suma=0;
        for(int i=0;i<broj_elementi;i++)
        {
            suma+=broevi[i];
        }
        return suma;
    }
    double average()
    {
        return sum()*1.0/broj_elementi;
    }
    void pecati()
    {
       cout<<broj_elementi<<": ";
       for(int i=0;i<broj_elementi;i++)
       {
       cout<<broevi[i]<<" ";
       }
       cout<<"sum: "<<sum();
       cout<<" average: "<<average();
        cout<<endl;

    }
    int get_elementi()
    {
        return broj_elementi;
    }
    ~List(){}
};
class ListContainer{
private:
    List *lists;
    int broj_listi;
    int trials;
public:
    ListContainer(List *lists=0,int broj_listi=0,int trials=0)
    {
        this->trials=trials;
        this->broj_listi=broj_listi;
        this->lists = new List[broj_listi];
        for(int i=0;i<broj_listi;i++)
        {
            this->lists[i]=lists[i];
        }
    }
    ListContainer(ListContainer &lc)
    {
        this->trials=lc.trials;
        this->broj_listi=lc.broj_listi;
        this->lists = new List[lc.broj_listi];
        for(int i=0;i<broj_listi;i++)
        {
            this->lists[i]=lc.lists[i];
        }
    }
    ListContainer &operator=(ListContainer &lc)
    {
        if(this!=&lc)
        {
        delete [] lists;
        this->trials=lc.trials;
        this->broj_listi=lc.broj_listi;
        this->lists = new List[lc.broj_listi];
        for(int i=0;i<broj_listi;i++)
        {
            this->lists[i]=lc.lists[i];
        }
        }
        return *this;
    }
    void print()
    {
       if(this->broj_listi==0)
           {
            cout<<"The list is empty" <<endl;
           return;
           }
           else
           {
               for(int i=0;i<broj_listi;i++)
               {
                   cout<< "List number: "<<i+1<< " List info: ";
                   this->lists[i].pecati();
               }
           }
           cout<<"Sum: "<<this->sum();
           cout<<" Average: "<<this->average()<<endl;
           cout<<"Successful attempts: "<<this->broj_listi<<" Failed attempts: "<<trials<<endl;


    }
    int sum()
    {
        int suma=0;
        for(int i=0;i<broj_listi;i++)
        {
            suma+=lists[i].sum();
        }
        return suma;
    }
     double average()
    {

        int elementi=0;
        for(int i=0;i<broj_listi;i++)
        {

            elementi+=lists[i].get_elementi();
        }
        return (double)sum()/elementi;
    }
    void addNewList(List l)
    {
    // mnogu dobra funkcija thanks to eden person od negotino we will call her sandra sandrews for privacy
        int flag=0;
        for(int i=0;i<broj_listi;i++)
        {
            if(lists[i].sum()==l.sum())
                flag=1;
        }
        if(flag!=1)
        {
            List *tmp = new List[broj_listi +1];
            for(int i=0;i<broj_listi;i++)
                tmp[i]=lists[i];
            tmp[broj_listi++]=l;

            lists = tmp;
        }
        else trials++;
    }
    ~ListContainer(){}



};
int main() {

    ListContainer lc;
    int N;
    cin>>N;

    for (int i=0;i<N;i++) {
        int n;
        int niza[100];

        cin>>n;

        for (int j=0;j<n;j++){
            cin>>niza[j];

        }

        List l=List(niza,n);

        lc.addNewList(l);
    }


    int testCase;
    cin>>testCase;

    if (testCase==1) {
        cout<<"Test case for operator ="<<endl;
        ListContainer lc1;
        lc1.print();
        cout<<lc1.sum()<<" "<<lc.sum()<<endl;
        lc1=lc;
        lc1.print();
        cout<<lc1.sum()<<" "<<lc.sum()<<endl;
        lc1.sum();
        lc1.average();

    }
    else {
        lc.print();
    }
}