#include <iostream>
#include <algorithm>

using namespace std;

int main() {
    int l, n, i, sum = 0;
    cin >> l >> n;
    int w[n];
    for (i = 0; i < n; i++) cin >> w[i];
    sort(w, w+n);
    for (i = 0; i < n; ++i) {
        sum += w[i];
        if (sum > l) break;
    }
    cout << i << '\n';
    return 0;
}