package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"strconv"
	"strings"
)

var sc = bufio.NewScanner(os.Stdin)
var wr = bufio.NewWriter(os.Stdout)

func next() string {
	sc.Scan()
	return sc.Text()
}

func nextInt() int {
	i, _ := strconv.Atoi(next())
	return i
}

func nextFloat() float64 {
	f, _ := strconv.ParseFloat(next(), 64)
	return f
}

func nextInts(n int) []int {
	ret := make([]int, n)
	for i := 0; i < n; i++ {
		ret[i] = nextInt()
	}
	return ret
}

func nextFloats(n int) []float64 {
	ret := make([]float64, n)
	for i := 0; i < n; i++ {
		ret[i] = nextFloat()
	}
	return ret
}

func nextStrings(n int) []string {
	ret := make([]string, n)
	for i := 0; i < n; i++ {
		ret[i] = next()
	}
	return ret
}

func main() {
	sc.Split(bufio.ScanWords)
	var t = nextInt()
	type c struct {
		d int
		a float64
		x []int
	}
	cc := make([]c, t)
	for i := 0; i < t; i++ {
		cc[i].d = nextInt()
		cc[i].a = nextFloat()
		cc[i].x = nextInts(cc[i].d)
	}
	fmt.Println(cc)
	for j := 0; j < t; j++ {
		out := make([]string, cc[j].d)
		for k := 0; k < cc[j].d; k++ {
			out[k] = strconv.FormatFloat(math.Round(float64(cc[j].x[k])/cc[j].a), 'f', -1, 64)
		}
		fmt.Println(strings.Join(out, " "))
	}

}