#include <vector>
#include <queue>
#include <deque>
#include <stack>
#include <algorithm>
#include <functional>
#include <iostream>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cctype>
#include <string>

using namespace std;

int main() {
  int l;
  cin >> l;
  int n;
  cin >> n;
  int w[n];
  for (int i = 0; i < n; i++) cin >> w[i];
  sort(w, w+n);
  int cnt = 0, sum = 0;
  for (int i = 0; i < n; i++) {
    sum += w[i];
    if (sum > l) break;
    cnt++;
  }

  cout << cnt << endl;
}