#include <bits/stdc++.h>
using namespace std;
#define int long long
typedef pair<int,int> P;
int INF = 1e16+7;
int mod = 1e9+7;
int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};
signed main() {
    int N,D;
    cin >> N >> D;
    vector<int>x(N);
    vector<int>v(N);
    for(int i = 0; i < N; i++) {
        cin >> x[i];
    }
    int cnt = 0;
    for(int i = 0; i < N; i++) {
        cin >> v[i];
        cnt+=v[i];
    }
    cout << (D+cnt-1)/cnt << endl;
}