#include <bits/stdc++.h>

using namespace std;

#define vc vector
#define pii pair <int, int>
#define int long long
using ld = long double;
using ll = long long;
const int inf = 1e9;


template<class T>
bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

template<class T>
bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

void solve_case() {
    int n, k; cin >> n >> k;
    vector<int> w(n);
    for (int i = 0; i < n; i++) cin >> w[i];
    ld s = 0;
    for (int i = 0; i < n; i++) s += w[i];
    cout << fixed << setprecision(10);
    for (int i = 0; i < n; i++) {
        cout << (s + k) * w[i] / s << " \n"[i == n - 1];
    }
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int T; cin >> T;
    while (T--) solve_case();
}