#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
#include <fstream>
#include <utility>
#include <functional>
#include <time.h>
#include <stack>
#include <array>
#define popcount __builtin_popcount
using namespace std;
typedef long long int ll;
typedef pair<int, int> P;

int main()
{
	int n;
	ll d; cin>>n>>d;
	ll x[100010], v[100010];
	for(int i=0; i<n; i++){
		cin>>x[i];
	}
	ll s=0;
	for(int i=0; i<n; i++){
		cin>>v[i];
		s+=v[i];
	}
	cout<<(d+s-1)/s<<endl;
	return 0;
}