#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define FOR(i, FN) for(int i = 0; i < (FN); i++)

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