import sys
input = sys.stdin.readline

T=int(input())

for tests in range(T):
    N=int(input())
    A=list(map(int,input().split()))

    OK=[0]*N

    for i in range(1,N-1):
        if A[i-1]<A[i]<A[i+1]:
            OK[i]=1
        elif A[i-1]>A[i]>A[i+1]:
            OK[i]=1

    B=[]
    for i in range(N):
        if OK[i]==0:
            B.append(A[i])


    if len(B)==5 and B[0]>B[1]:
        print("Yes")
    else:
        print("No")