#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

ll N, D, x[101010], v[101010], sum;

int main() {
  cin >> N >> D;
  for (int i = 0; i < N; i++) cin >> x[i];
  for (int i = 0; i < N; i++) {
    cin >> v[i];
    sum += v[i];
  }
  cout << (D + sum - 1) / sum << endl;
}