#include <iostream>
using namespace std;

const int MAX_GRADE = 1000;
void ReadThePolynom(int Polynom[], int size) //function for Polynom coefficients
{
	for (int i = 0; i < size; i++)
	{
		cin >> Polynom[i];
	}
}
void FindTheDerivative(int Polynom[], int size, int Derivative1) //function for Finding Polynom's Devirative
{
	cin >> Derivative1;
	int coeff = Polynom[0];
	int grade = 0;
	for (int j = 0; j < size; j++)
	{
		grade = size - j; // example: size = 4, j = 0, grade of the polynom's value is 0
		coeff = Polynom[j]; //coefficient' s first value is the first entered number from the console
		for (int i = 1; i <= Derivative1; i++) //finding the 'N' devirative
		{
			coeff *= grade; // example: devirative of 3x^2 = 9x
			grade--;
		}
		if (coeff != 0) // not to print 0
			cout << coeff;
		else
		{
			break;
		}
		if (grade >= 1) // if the grade is 0, we don't need to print x^0, because x^0 = 1
		{
			cout << "*X";
			if (grade == 1)
			{
				cout << " + ";
			}
		}
		if (grade > 1) // if the grade is 1, we don't need to print x^1, because x^1 = x
		{
			cout << '^' << grade << " + ";
		}
	}
	if (Derivative1 > size) // if we have to find a bigger devirative than the biggest coefficient of the polynom, its devirative is 0
	{
		cout << '0';
	}
	cout << endl;

}

int main()
{
	int N;
	cin >> N;
	int Polynom[MAX_GRADE];
	ReadThePolynom(Polynom, N);
	int Derivative;
	cin >> Derivative;
	FindTheDerivative(Polynom, N, Derivative);
	return 0;
}