using System;
using System.Linq;

class blockinthebox
{
static void Main()
{
int sum = 0,count = 0;
int L = int.Parse(Console.ReadLine());
int N = int.Parse(Console.ReadLine());
string[] str = Console.ReadLine().Split(' ');
int[] W = new int[N];

for(int i=0;i < N;i++)
{
W[i] = int.Parse(str[i]);
}

var Wsize = from ws in W
orderby ws
select ws;

foreach(var z in Wsize)
{
if(sum + z <= L)
{
sum += z;
count++;
}
}
Console.WriteLine(count);
}
}