#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, srt, end) for (long long i = (srt); i < (long long)(end); i++)

int main(){
    ll n, d;
    cin >> n >> d;
    vector<ll> x(n), v(n);
    rep(i, 0, n) cin >> x[i];
    rep(i, 0, n) cin >> v[i];
    double l = 0, r = 1e20;
    rep(itr, 0, 1000) {
        double m = (l + r) / 2;
        double sum = 0;
        rep(i, 0, n) sum += v[i] * m;
        if(sum >= d) r = m;
        else l = m;
    }
    cerr << r << endl;
    cerr << r - (ll)r << endl;
    if(r - (ll)r < 1e-12) cout << (ll)r << endl;
    else cout << (ll)r + 1 << endl;
    return 0;
}