package main
 
import (
	"bufio"
	"os"
	"fmt"
	"strconv"
	"strings"
)
 
func main() {
	var t int
	fmt.Scanln(&t)
 
	for i := 0; i < t; i++ {
 
		var n,k,ans,owns int
		owns = 0
		ans = 0
		fmt.Scan(&n,&k) 
		fmt.Println("n,k=",n,k)
 
		reader := bufio.NewReader(os.Stdin)
		s, _ := reader.ReadString('\n') 
		s = strings.TrimSpace(s)
 
		ai := strings.Split(s," ")
		for j := 0; j < n; j++ {
			a, _ := strconv.Atoi(ai[j])
 
			fmt.Println("a=",a)
			if a >= k && a> 0{
				owns += a
			}else if a == 0 && owns > 0 {
				owns--
				ans++
			}
		}
		fmt.Println(ans)	
	}
}

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

MwozIDIKMyAwIDAKNiAyCjAgMyAwIDAgMCAwCjIgNQo1IDQ=

3
3 2
3 0 0
6 2
0 3 0 0 0 0
2 5
5 4