/*
    No.5 数字のブロック
    https://yukicoder.me/problems/no/5
*/
#include <bits/stdc++.h>
using namespace std;

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

    int l, n;
    cin >> l >> n;
    vector<int> wi(n);

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

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

    int sum = 0;
    for (size_t i = 0; i < wi.size(); i++) {

        sum += wi[i];
        // cerr << "wi : " << wi[i] << ", " << sum << endl;
        if (sum > l) {
            cout << i << endl;
            return 0;
        }
    }

    cout << wi.size() << endl;
    return 0;
}