from collections import Counter
for j in range(int(input())) :
e=int(input())
a=list(map(int, input(). split()))
b=list(map(int, input(). split()))
t =[]
c=Counter(a) +Counter(b)
for k, l in c. items() :
if l%2==0:
continue
else:
print(-1)
break
else:
for h in range(0, len(a) ) :
if a[h] in b:
t.append(a[h])
a = [ele for ele in a if ele not in t]
b =[ele for ele in b if ele not in t]
a=sorted(a)
b=sorted(b)
if len(a) == 0 and len(b)== 0:
print(0)
else:
s=0
lo,lo1=[],[]
while(s<=len(a)-1) :
if s%2!=0:
lo.append(a[s])
lo1.append(b[s])
s+=1
mi=min(min(lo), min(lo1))
count=0
for g in range(0, len(lo)) :
if lo[g]==mi or lo1[g] == mi:
count=count+1
else:
if min(lo[g],lo1[g]) <= (2*mi):
count=count+min(lo[g],lo1[g])
else:
count =count+(2*mi)
print(count)
Please verify my code
I got wrong answer
