#include "bits/stdc++.h"
using namespace std;
#define ll long long
#define rep(i,n) for(ll 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 sum = 0;
	rep(i, n)sum += u[i];
	cout << (d + sum - 1) / sum << endl;
	return 0;
}