import sys
input=sys.stdin.readline
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))

def main():
    mod=10**9+7
    N,D=MI()
    x=LI()
    v=LI()
    V=sum(v)
    ans=(D+V-1)//V
    
    print(ans)


main()