n=int(input())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
allpat=[]
todo=[[i] for i in range(n)]
while todo:
  v=todo.pop()
  if len(v)==n:
    allpat.append(v)
    continue
  for nv in range(n):
    if nv in v:continue
    todo.append(v+[nv])
mxv=0
ans=0

for pat in allpat:
  tmp=0
  for i in range(n):
    tmp+=max(0,a[pat[i]]-b[i])
  if tmp==mxv:
    ans+=1
  elif tmp>mxv:
    mxv=tmp
    ans=1
print(ans)