#include <iostream>
#include <iomanip>
#include <cmath>

using ldouble = long double;

void solve() {
    int n;
    ldouble x;
    std::cin >> n >> x;

    ldouble d = 0, i = 0;
    while (n--) {
        ldouble a;
        std::cin >> a;

        d += std::pow(x, a - 1) * a;
        i += (a == -1.0 ? std::log(x) : std::pow(x, a + 1) / (a + 1));
    }

    std::cout << std::fixed << std::setprecision(10)
              << d << std::endl
              << i << std::endl;
}

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

    solve();

    return 0;
}