#include<iostream>
#include<math.h>


using namespace std;

double bibun(double i, int B) {
	return i*pow(B,i-1);
}
double sekibun(double i, int B) {
	if (i == -1) {
		return log(B);
	}
	else {
		return pow(B,i+1) / (i + 1);
	}
}

int main(void) {
	int N, B;
	cin >> N;
	cin >> B;
	double *a = new double[N];
	double x = 0;
	double y = 0;
	for (int i = 0; i < N; i++) {
		cin >> a[i];
		x += bibun(a[i], B);
		y += sekibun(a[i], B);
	}
	cout << x << endl;
	cout << y << endl;
	return 0;
}