#include <iostream>
#include <fstream>
#include <vector>
#include <cstring>
#include <string>
#include <algorithm>
#include <iomanip>
#include <cmath>
using namespace std;

double diff(double a, double x) {
	if(a == 0.0) {
		return 0.0;
	}
	return pow(x, a - 1.0) * a;
}

double inte(double a, double x) {
	if(a == -1.0) {
		return log(x);
	}
	return pow(x, a + 1.0) / (a + 1.0);
}

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	int N;
	double B;
	cin >> N >> B;

	double ans1 = 0, ans2 = 0;
	for(int i = 0; i < N; i++) {
		double a;
		cin >> a;
		ans1 += diff(a, B);
		ans2 += inte(a, B);
	}

	cout << setprecision(15) << ans1 << endl;
	cout << setprecision(15) << ans2 << endl;

}