using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var line = Console.ReadLine().Split(' ').Select(x => int.Parse(x)).ToList();
        int n = line[0];
        int m = line[1];

        var candy = new List<int>(n);
        candy = Console.ReadLine().Split(' ').Select(x => int.Parse(x)).ToList();
        candy.Sort();

        int takeCnt = 0;
        int idx = 0;
        while (idx < candy.Count())
        {
            if (candy[idx] > 0)
            {
                if (takeCnt == m) { break; }
                takeCnt++;
                candy[idx]--;
            }
            else idx++;
        }
        Console.WriteLine(candy.Count(x => x == 0));
    }
}