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

int main(){
	int a[10000];
	int l;
	int n;
	int t = 0;
	cin >> l;
	cin >> n;
	for (int i = 0; i < n; i++){
		cin >> a[i];
	}
	sort(a, a + n);
	for (int i2 = 0; i2 < n; i2++){
		t += a[i2];
		if (t>l){
			cout << i2  << endl;
			break;
		}
		else if(i2==n-1){
			cout << n << endl;
		}
	}

}