// lab4b
#include <iostream> 
#include <cstdlib>
#include <cmath>
#define max_degree 20
using namespace std;
int main(int argc, char *argv[])
{  int i, n, A[max_degree+1]; //data elements
   double sum, x0, px0;
   // eisodos bathmou 
   do 
   {cout<<"DOSE BATHMO POLYWNYMOY <=20: ";
    cin>>n;
   } while (n<0 || n>20);
   cout<<"DOSE SYNTELESTES POLYWNYMOY"<<endl;
   for (i=0; i<=n; i++) {
       cin>>A[i]; // eisodos syntelestwn
       }   
   cout<<"DOSE x0: ";
   cin>>x0;
   // YPPOLOGISMOS P(X0) 
   sum=0;
   for (i=0; i<=n; i++) {
       px0=px0+A[i]*pow(x0,i);
       }        
   // EKTYPWSH
   cout <<"TO POLYWNYMO"<<endl;         
   for (i=0; i<=n; i++)
       if (A[i]<0) cout<<"-"<<abs(A[i])<<"x^"<<i; 
       else if (A[i]==0) cout<<"";
            else cout<<"+"<<(A[i])<<"*x^"<<i;
   cout<<endl; 
   cout<<"STO "<<x0<<" EXEI TIMH "<<px0<<endl;      
   system("PAUSE");
   return 0;     
}