#include <iostream>
#include <vector>
using namespace std;
typedef long long ll;

int main(){
    ll n,d;
    cin>>n>>d;
    vector<ll> x(n),v(n);
    ll sum=0;
    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<<'\n';
}