a=int(input())
for i in range(a):
	b=int(input())
	c=list(map(int,input().split()))
	n=0
	for j in range(b-1):
		if n%2==0 and c[j]<c[j+1]:
			n+=1
		elif n%2==1 and c[j]>c[j+1]:
			n+=1
			if n==4:
				break
	if n==3:
		print('Yes')
	else:
		print('No')