using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[] NMi => ReadLine().Split().Select(c => int.Parse(c) - 1).ToArray();
    static int[][] NMap(int n) => Enumerable.Repeat(0, n).Select(_ => NMi).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        var (n, d) = (c[0], c[1]);
        var x = NList;
        var v = NList;
        var sum = 0L;
        for (var i = 0; i < n; ++i) sum += v[i];
        var ng = 0L;
        var ok = (d + sum - 1) / sum;
        while (ok - ng > 1)
        {
            var mid = (ok + ng) / 2;
            var sub = 0L;
            for (var i = 0; i < n; ++i) sub += v[i] * mid;
            if (sub >= d) ok = mid;
            else ng = mid;
        }
        WriteLine(ok);
    }
}