#include <bits/stdc++.h>
using namespace std;

int main(void) {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    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 res = 0, cnt = 0;
    for (auto x: w) {
        res += x;
        if (res > l) break;
        cnt++;
    }
    cout << cnt << '\n';
    return 0;
}