import java.util.*;

public class Main {
    public static void main(String[] args) {
        final Scanner sc = new Scanner(System.in);
        long n = sc.nextLong();
        long d = sc.nextLong();
        for (long i=0; i<n; i++) {
            long temp = sc.nextLong();
        }
        long summ = 0;
        for (long i=0; i<n; i++) {
            long temp = sc.nextLong();
            summ += temp;
        }

        System.out.println((d+summ-1)/summ);
        sc.close();
    }
}