#include <bits/stdc++.h>

using i64 = long long;
using u64 = unsigned long long;
using u32 = unsigned;

void solve() {
    int n, k;
    std::cin >> n >> k;
    
    std::vector<int> w(n);
    for (int i = 0; i < n; i++) {
        std::cin >> w[i];
    }
    
    i64 sum = std::accumulate(w.begin(), w.end(), 0LL);
    
    for (int i = 0; i < n; i++) {
        std::cout << 1.0 * w[i] / sum * (sum + k) << " \n"[i == n - 1];
    }
}

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    
    std::cout << std::fixed << std::setprecision(10);
    
    int T;
    std::cin >> T;
    
    while (T--) {
        solve();
    }
    
    return 0;
}