#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int main() {
    int l, n; cin >> l >> n;
    vector<int> w(n);
    for (int& i : w) cin >> i;
    
    sort(w.begin(), w.end());
    
    int sum = 0;
    for (int i = 0; i < n; ++i) {
        sum += w[i];
        if (sum > l) {
            cout << i << endl;
            return 0;
        }
    }
    cout << n << endl;
}