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

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