#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define P pair<int, int>

int main() {
  int n;
  ll d;
  cin >> n >> d;
  vector<ll> x(n), v(n);
  rep(i,n) cin >> x[i];
  rep(i,n) cin >> v[i];
  ll sum = 0;
  rep(i,n) sum += v[i];
  ll ans = (d+sum-1)/sum;
  cout << ans << endl;


}