import itertools as t
I,T,m=input,int,max
def L():return list(map(T,I().split()))
n,l=T(I()),[]
a=L()
b=L()
for p in t.permutations(a,n):
 c=0
 for i in range(n):c+=m(0,p[i]-b[i])
 l.append(c)
print(l.count(m(l)))