import numpy as np
for i in"T"*int(input()):
	N,A,B=int(input()),np.array(input().split(),"q"),np.array(input().split(),"q")
	K=np.r_[0,np.cumsum(B-np.sort(A))].argmax()
	print("".join([str(i) for i in 0+(A.argsort()<K)]))