#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi  = vector<int>; using vb  = vector<bool>; using vd  = vector<double>; using vl  = vector<ll>;
using vvi = vector<vi>;  using vvb = vector<vb>;   using vvd = vector<vd>;     using vvl = vector<vl>;

#define REP(i,n) for(ll i=0; i<(n); ++i)

int main() {
	cout << fixed << setprecision(30);
	ll n, b;
	cin >> n >> b;
	vd a(n); REP(i, n) cin >> a[i];

	{
		double ans = 0;
		REP(i, n) ans += a[i] * pow(b, a[i] - 1);
		cout << ans << endl;
	}
	{
		double ans = 0;
		REP(i, n) {
			if (a[i] == -1) ans += log(b);
			else ans += pow(b, a[i] + 1) / (a[i] + 1);
		}
		cout << ans << endl;
	}

	return 0;
}