#include<stdio.h>

int main(void)
{
	int l = 0, n = 0, str[10000], i,s,p=0, k, t, sum=0;

		scanf("%d %d", &l, &n);
	for (i = 0; i < n; i++) {
		scanf("%d", &str[i]);
	}
	//sort
	for (i = 0; i < n-1; i++) {

		for (k = n - 1; k > i; k--) {
			if(str[k-1]>str[k])
			t= str[k];
			str[k] = str[k - 1];
			str[k - 1] = t;
		}
	}

	for (s = 0; sum <= l && s<n; s++)
	{
		sum =sum+str[s];
		p++;
	}

	if (sum > l)
		p = p - 1;
	printf("%d\n", p);

	return 0;
}