#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef pair<ll, ll> P;
typedef vector<ll> VI;
typedef vector<VI> VVI;
const ll MOD = 1000000007;
const ll INF = 1e18;
#define REP(i, n) for(int i = 0; i < n; i++)
#define ALL(v) v.begin(), v.end()

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