#include<stdio.h>

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

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

		for (k = n - 1; k > m; 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;
}