#include <algorithm>
#include <climits>
#include <iostream>
#include <string>
#include <vector>
using namespace std;

typedef long long ll;

int main() {
	int N, B; cin >> N >> B;
	vector<double> a(N);
	for (int i = 0; i < N; i++)
		cin >> a[i];
	double x = 0, y = 0;
	for (int i = 0; i < N; i++) {
		x += a[i] * pow(B, a[i] - 1);
		if (a[i] == -1) y += log((double)B);
		else y += 1 / (a[i] + 1) * pow(B, a[i] + 1);
	}
	cout << x << endl << y << endl;
}