#include <bits/stdc++.h>
using namespace std;

int main(){
	int n,b;
	cin >> n >> b;
	vector<double> a(n);
	for(auto &x:a) cin >> x;
	long double x1 = 0.0, x2 = 0.0;
	for(int i = 0; i < n; i++){
		x1 += a[i] * pow(b,a[i] - 1.0);
		if(a[i] == -1) x2 += log(b);
		else x2 += 1.0 / (a[i] + 1.0) * pow(b,a[i] + 1.0);
		//		cout << "x1 = " << x1 << endl;
		//		cout << "x2 = " << x2 << endl;
	}
	printf("%.10Lf\n%.10Lf\n",x1 ,x2);
	return 0;
}