#include <iostream>
#include <vector>
#include <numeric>

using namespace std;

int main() {
    int n,d;
    cin >> n >> d;
    vector x(n,0);
    vector v(n,0);

    for (int i=0; i<n; i++) cin >> x[i];
    for (int i=0; i<n; i++) cin >> v[i];

    long sum = accumulate(v.begin(), v.end(), 0LL);
    cerr<<"sum : " << sum << endl;
    cout << (d+sum-1)/sum << endl;
}