#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for(ll i = 0, i##_len = (n); i < i##_len; i++)
#define reps(i, s, n) for(ll i = (s), i##_len = (n); i < i##_len; i++)
#define rrep(i, n) for(ll i = (n) - 1; i >= 0; i--)
#define rreps(i, e, n) for(ll i = (n) - 1; i >= (e); i--)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) ((ll)(x).size())
#define len(x) ((ll)(x).length())
#define endl "\n"

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    // ifstream in("input.txt");
    // cin.rdbuf(in.rdbuf());
    ll n, d;
    cin >> n >> d;
    vector<ll> x(n), v(n);
    rep(i, n) cin >> x[i];
    rep(i, n) cin >> v[i];
    ll low = 0, high = d + 1;
    while((low + 1) < high) {
        ll mid = (low + high) / 2;
        ll tot = 0;
        bool con = true;
        rep(i, n) {
            tot += v[i] * mid;
            if (tot >= d) {
                high = mid;
                con = false;
                break;
            }
        }
        if (con) low = mid;
    }
    cout << high << endl;
    return 0;
}