N = int(input())
B = int(input())
C = list(map(int, input().split()))
S = list(map(int, input().split()))

# 価格操作
smax = 0
idx = -1
for i in range(N):
    if S[i] > smax:
        idx = i
        smax = S[i]
C[idx] = 1

CS = [(C[i],S[i]) for i in range(N)]
CS.sort(key = lambda x:x[0])

ans = 0
for i in range(N):
    cost, pcs = CS[i]
    buy = min(B//cost, pcs)
    B -= buy * cost
    ans += buy

print(ans)