import sys
line=sys.stdin.readline().strip()
test=int(line)
for _ in range(test):
     s,cnt=0,0
     a=sys.stdin.readline().split()
     n,k=int(a[0]),int(a[1])
     numstr=sys.stdin.readline().split()
     numl=list(map(int,numstr))
     for i in range(n):
        if numl[i]>=k:
            s+=numl[i]
        elif numl[i]==0 and s>=1:
            s-=1
            cnt+=1
     print(cnt)