import sys
input = sys.stdin.readline

T=int(input())

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

    AX=[(A[i],i) for i in range(N)]
    AX.sort()

    ind=0
    MAX=0

    score=0
    for i in range(N):
        score+=B[i]-AX[i][0]

        if MAX<score:
            MAX=score
            ind=i+1

    LANS=[0]*N

    for i in range(ind):
        LANS[AX[i][1]]=1

    print("".join(map(str,LANS)))