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

using namespace std;

int main(){
    int t, n;
    cin >> t >> n;
    vector<int> a(n);
    for(int i = 0; i < n; i++){
        cin >> a[i];
    }
    sort(a.begin(), a.end());
    
    int cur = 0;
    int res = 0;
    
    for(int i = 0; i < n; i++) {
            if(cur + a[i] <= t) {
                cur += a[i];
                res++;
            } else {
                break;
            }
        }
    cout << res << endl;
}