n,d=map(int,input().split())
x=list(map(int,input().split()))
u=list(map(int,input().split()))
def f(t):
  v=[u[i]*t for i in range(n)]
  return sum(v)
ng=0
ok=10**20
while ng+1!=ok:
  mid=(ng+ok)//2
  if f(mid)>=d:ok=mid
  else:ng=mid
print(ok)