#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main() {
    int L, N, w, sum = 0, ans = 0;
    vector<int> W(0);
    cin >> L >> N;
    for(int i=0; i<N; i++) {
        cin >> w;
        W.push_back(w);
    }
    sort(W.begin(), W.end());
    while(sum+W[ans]<=L) {
        sum += W[ans];
        ans++;
    }
    cout << ans << endl;
}