#include <iostream>
#include <string>
#include <iterator>
#include <algorithm>
#include <vector>
using namespace std;

class CLaptop
{
protected:
    string Producer;
    int Screensize;
public:
    CLaptop()
    {
        Producer="";
        Screensize=0;
    }
    CLaptop(string pr,int scrsz)
    {
        Producer=pr;
        Screensize=scrsz;
    }
    CLaptop(int scrsz)
    {
        Producer="";
        Screensize=scrsz;
    }
    CLaptop(CLaptop& use)
    {
        Producer=use.Producer;
        Screensize=use.Screensize;
    }
    string getPR() const
    {
        return Producer;
    }
    int getSZ() const
    {
        return Screensize;
    }
    void Output(ostream& out)
    {
        out<<Producer<<" "<<Screensize;
    }
    void Input(istream& in)
    {
        string pr;
        int sz;
        in>>pr;
        cout<<" ";
        Producer=pr;
        in>>sz;
        Screensize=sz;
    }
    CLaptop operator=(CLaptop& use)
    {
        Producer=use.Producer;
        Screensize=use.Screensize;
        return *this;
    }
    bool operator<(CLaptop& use)
    {
        return Screensize<use.Screensize;
    }
    bool operator==(CLaptop& use)
    {
        return Screensize==use.Screensize;
    }
    friend ostream& operator<<(ostream& out,CLaptop& use)
    {
        use.Output(out);
        return out;
    }
    friend istream& operator>>(istream& in,CLaptop& use)
    {
        use.Input(in);
        return in;
    }
};
class Shop
{
private:
    vector<CLaptop> Sales;
public:
    Shop(vector<CLaptop>& use)
    {
        copy(use.begin(),use.end(),Sales.begin());
    }
    Shop(){}
    void writeTo(ostream& out)
    {
        copy(Sales.begin(),Sales.end(),ostream_iterator<CLaptop>(cout,"\n"));
    }
};
int main()
{
    return 0;
}