#include<stdio.h>
#include<stdlib.h>
int asc(const void* a, const void* b)
{
	return *(int*)a - *(int*)b;
}
int main()
{
	int l, n;
	scanf("%d%d", &l, &n);
	int i;
	int w[10004];
	for (i = 0; i < n; i++)
		scanf("%d", &w[i]);
	qsort(w, n, sizeof(int), asc);
	int sum = 0;
	for (i = 0; i < n; i++)
		sum += w[i];
	int ans = n;
	while (sum > l)
	{
		ans--;
		sum -= w[ans];
	}
	printf("%d\n", ans);
	return 0;
}