#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define repr(i,n) for(int i = (int)(n); i >= 0; i--)
#define all(v) v.begin(),v.end()
typedef long long ll;

int main(){
    ll N,D;
    cin >> N >> D;
    vector<ll> x(N);
    vector<ll> v(N);
    rep(i,N) cin >> x[i];
    rep(i,N) cin >> v[i];
    ll ans_v = 0;
    rep(i,N) ans_v += v[i];
    if (D % ans_v == 0) cout << D / ans_v << endl;
    else cout << D / ans_v + 1 << endl;
}