import java.util.*;
import java.lang.*;
import java.io.*;

public class Main {
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		// 入力
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int D = sc.nextInt();
		int[] X = new int[N];
		int[] V = new int[N];
		for(int i = 0; i < N; i++){
			X[i] = sc.nextInt();
		}
		long Vsum = 0L;
		for(int i = 0; i < N; i++){
			V[i] = sc.nextInt();
			Vsum += V[i];
		}
		
		// 計算
		long time = 0L;
		if(D % Vsum == 0){
			time = D / Vsum;
		}else{
			time = D / Vsum + 1;
		}
		
		// 出力
		System.out.println(time);
	}

}