#include <stdio.h>

int main(void) {
	// your code goes here
	int l, n, w[10000], i, j, sum=0, count=0, min=100000, min_i;

	scanf("%d",&l);
	scanf("%d",&n);
	
	for(i=0;i<n;i++) scanf("%d",w+i);
	
	do{
		min=100000;
		for(i=0;i<n;i++){
			if(w[i]<min){
				min=w[i];
				min_i=i;
			}
		}
		w[min_i]=100000;
		sum+=min;
		count++;
	}while(sum<=l);
	
	count--;
	
	
	printf("%d\n",count);

	return 0;
}