/*
 * 5.cpp
 *
 *  Created on: 2017/08/26
 *      Author: pinebooks
 */

#include <cstdio>
#include <vector>
#include <algorithm>

using namespace std;

int main() {
  int L, N;
  scanf("%d%d", &L, &N);
  vector<int> W;
  for (int i = 0; i < N; ++i) {
    int a;
    scanf("%d", &a);
    W.push_back(a);
  }
  sort(W.begin(), W.end());
  int sum = 0;
  int i = 0;
  while (true) {
    if (sum + W[i + 1] > L)
      break;
    ++i;
    sum += W[i];
  }
  printf("%d", i + 1);
}