#include<stdio.h>

#define N 10000

int main(void){
	int n = 0;
	int l = 0;
	int w[N];
	int x = 0;
	int i = 0;
	int j = 0;
	int flag = 0;
	int count = 0;

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

	for(i = 0;i < n-1;i++){
		for(j = n-1;j > i;j--){
			if(w[j] < w[j-1]){
				x = w[j];
				w[j] = w[j-1];
				w[j-1] = x;
			}
		}
	}
	
	x = 0;

	for(i = 0;i < n;i++){
		x += w[i];
		count++;
		if(x > l){
			count--;
			break;
		}
	}

	printf("%d", count);

	return 0;
}