#include <stdio.h>
#include <stdlib.h>

int cmp(const void* n1, const void* n2)
{
	if (*(long*)n1 > *(long*)n2)
	{
		return 1;
	}
	else if (*(long*)n1 < *(long*)n2)
	{
		return -1;
	}
	else
	{
		return 0;
	}
}

int main()
{
	int l, n, w[10000];

	scanf("%d", &l);
	scanf("%d", &n);
	for (int i = 0; i < n; i++) {
		scanf("%d", &w[i]);
	}

	qsort(w, n, sizeof(int), cmp);

	int i = 0, j = 0;

	while (i < n)
	{
		j += w[i];

		if (l < j)
		{
			break;
		}

		i++;
	}

	printf("%d", i);

	return 0;
}