#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  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 sum = accumulate(v.begin(), v.end(), 0LL);
  cout << (d + sum - 1) / sum << endl;
  return 0;
}