case=int(input())
for i in range(case):
n=int(input())
l=[]
r=[]
lm=[]
l=list(map(int,raw_input().split()))
r=list(map(int,raw_input().split()))
for j in range(n):
lm.append(l[j]*r[j])
print lm
if lm.count(max(lm))>1:
if r.count(max(r))>1:
print lm.index(lm[0])+1
else:
print r.index(max(r))+1
else:
print lm.index(max(lm))+1
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