#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;
constexpr double PI = 3.14159265358979323846;

int main(){
    int n,d;
    cin >> n >> d;
    vector<int> x(n),v(n);
    ll vv = 0;
    rep(i,n) cin >> x[i];
    rep(i,n) cin >> v[i];
    rep(i,n) vv += v[i];
    cout << (d+vv-1)/vv << endl;
    return 0;
}