#include <iostream>
#include <cmath>
#include <set>
#include <string>
using namespace std;
using ll = long long;

int main() {
        ll N,D;
        cin >> N; cin >> D;
        ll xs[N] = {};
        ll vs[N] = {};

        ll total_v = 0;
        for(ll i=1;i<=N;i++) 
          cin >> xs[i];
        for(ll i=1;i<=N;i++) { 
          cin >> vs[i]; 
          total_v += vs[i];
        }
  

        double a = double(D)/total_v;
        if(a == ll(a)) {
          cout << ll(a) << endl;
        } else {
          cout << ll(a)+1 << endl;
        }
        return 0;
}