#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define FOR(i,l,r) for(ll i=(l);i<(r);++i)
#define REP(i,n) FOR(i,0,n)
template<class T> T Roundup_div(T x, T y) {return (x+(y-1))/y;}

int main(){
    ll n, d, k; cin >> n >> d;
    ll sum = 0;
    REP(i, n) cin >> k;
    REP(i, n){
        ll a; cin >> a;
        sum += a;
    }
    cout << Roundup_div(d, sum) << '\n';
}