hedder.h

#include<iostream>
#include<iomanip>
#include<fstream>
#include <vector>
using namespace std;
class Polynom
{
public:
    int n;
    double *koef;
    Polynom();
    Polynom(int an);
    Polynom(const Polynom &);
    ~Polynom();
    int getn();
    double sum();
    double getkoef(int);
    Polynom operator+(const Polynom &);
    Polynom operator-(const Polynom &);
    Polynom operator*(const Polynom &);
    Polynom operator=(const Polynom &);
    friend ostream &operator<< (ostream &s, const Polynom &c);
    friend istream &operator >> (istream &s, Polynom &c);
    double &operator()(int i)
    {
        return koef[i];
    }
};
class Vec {
public:
  vector <Polynom> a;
  //Polynom a;
  Vec();
  ~Vec();
  void insert(Polynom x);
  void erasee(int x);
  void reversee(vector <Polynom> a);
  Polynom &operator[](int x){
    return a[x];
  }
};