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

int main(){
    int n, l;
    cin >> l;
    cin >> n;
    int a_array[n];

    for ( int i = 0; i < n; i++ )  {
        cin >> a_array[i];
    }
    sort(a_array, a_array+n);

    int s, ans = 0;
    for ( int i = 0; i < n; i++ )  {
        s = s + a_array[i];
        if (s <= l) ans++; 
    }

    cout << ans << endl;
    return 0;
}