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

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