#include <iostream>
using namespace std;
class polinom {
float *p;
public:
polinom(float a=0,float b=0,float c=0)
    {
        p=new float[3];
        p[0]=a;
        p[1]=b;
        p[2]=c;
    }
polinom(const polinom& pol)
    {
        p=new float[3];
       p[0]=pol.p[0];
       p[1]=pol.p[1];
       p[2]=pol.p[2];

    }
~polinom(){delete []p;}

polinom& operator=(const polinom& pol)
    {
        if(this==&pol)
            return *this;
        delete []p;
        p=new float[3];
        p[0]=pol.p[0];
       p[1]=pol.p[1];
       p[2]=pol.p[2];
            return *this;
    }

friend ostream& operator<<(ostream& out,const polinom& pol)
    {
        for(int i=0;i<3;i++)
            {
                out<<pol.p[i]<<"X^"<<3-i-1;
                out<<"      ";
            }
        out<<"\n";
        return out;
    }
friend istream& operator>>(istream& in,const polinom& pol)
    {
        for(int i=0;i<3;i++)
            {
                cout<<"Vnesi go koeficientot pred X^"<<3-i-1<<endl;
                in>>pol.p[i];
            }
            return in;
    }

polinom operator+(const polinom& pol)
    {
        for(int i=0;i<3;i++)
            {
                p[i]+=pol.p[i];
            }
        return *this;
    }
polinom operator-(const polinom& pol)
    {
        for(int i=0;i<3;i++)
            {
                p[i]-=pol.p[i];
            }
        return *this;
    }
polinom operator*(const polinom& pol)
    {
        for(int i=0;i<3;i++)
            {
                p[i]*=pol.p[i];
            }
        return *this;
    }

};
int main(){
polinom m(3),n(4,2.7,3.0),k;
cin>>m;
cout<<"M = "<<m<<endl;
cin>>n;
cout<<"N = "<<n<<endl;
polinom o=m;
cout<< "O = "<<o<<endl;
k=o;
cout<<"K = "<<k<<endl;
o=m + n;
cout<<"M + N = "<<o<<endl;
o=m - n;
cout<<"M - N = "<<o<<endl;
o=m * n;
cout<<"M * N = "<<o<<endl;
cout<<m;
return 0;
}