#include <iostream>
#include <algorithm>
using namespace std;

int main(){
	int L, N, W[10001], i;
	cin >> L >> N;
	for(i = 0; i < N; i++)	cin >> W[i];

	sort(W, W+N);
	i = 0;
	do{
		L -= W[i];
		i++;
	}while(L - W[i] >= 0);

	cout << i << endl;
	return 0;
}