#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    int l, n;
    cin >> l >> n;

    vector<int> w(n);
    for (int i = 0; i < n; i++) {
        cin >> w[i];
    }

    sort(w.begin(), w.end());

    int s = 0;
    for (int i = 0; i < n; i++) {
        s += w[i];
        if (s > l) {
            cout << i << endl;
            quick_exit(0);
        }
    }

    cout << n << endl;

    return 0;
}