#include <bits/stdc++.h>
using namespace std;

#define rep(i,n) for(i = 0;i < n;++i)
#define all(v) v.begin(), v.end()
using ll = long long;

int main()
{
    ll i,j;
    ll n,d;
    cin >> n >> d;
    ll sum = 0;
    for(i = 0;i < n;++i){
        ll x;
        cin >> x;
    }
    rep(i,n){
        ll v;
        cin >> v;
        sum += v;
    }
    cout << (d-1)/sum+1 << endl;

    return 0;
}