#include "bits/stdc++.h"
using namespace std;
#define ll long long
#define rep(i,n) for(int i = 0; i < (n); i++)
const int inf = 1e9 + 11;
int MOD = 1e9 + 7;
const ll INF = 1LL << 60;

int main() {
	ll n, d; cin >> n >> d;
	vector<ll>x(n), u(n); rep(i, n)cin >> x[i];
	rep(i, n)cin >> u[i];
	ll l = 0, r = 1e10;
	while (r - l > 1) {
		ll mid = (l + r) / 2;
		ll now = 0;
		rep(i, n) {
			now += mid * u[i];
		}
		if (now >= d) {
			r = mid;
		}
		else l = mid;
	}
	cout << r << endl;
	return 0;
}