#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = (a); i < (b); ++i)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for(int i = (n) - 1; (i) >= 0; --i)
#define SZ(n) (int)(n).size()
#define ALL(n) (n).begin(), (n).end()
#define MOD LL(1e9 + 7)
#define INF 1000000
using namespace std;
typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PI;

int main() {
	int n, b;
	cin >> n >> b;
	double f = 0;
	double F = 0;
	REP(i, n) {
		double a;
		cin >> a;
		f += a * pow(b, a - 1);
		if (a == -1)
			F += log(b);
		else
			F += pow(b, a + 1) / (a + 1);
	}
	cout << setprecision(6) << fixed << f <<endl;
	cout << setprecision(6) << fixed << F <<endl;
	return 0;
}