#include <bits/stdc++.h>
using namespace std;

//--------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define RFOR(i,a,b) for(int i=(b)-1;i>=(a);i--)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) RFOR(i,0,n)
#define LL long long
#define INF INT_MAX/3

//--------------------------------------------
const double EPS = 1e-14;
const double PI  = acos(-1.0);

//--------------------------------------------

int L, N;
vector <int> W;
int tmp;
int sum = 0;

int main(){
  scanf("%d",&L);
  scanf("%d",&N);
  REP (i,N) {
    scanf("%d",&tmp);
    W.push_back(tmp);
  }

  sort(W.begin(), W.end());

  int count = 0;
  REP (i,N) {
    tmp = sum + W[i];
    if (tmp <= L) {
      sum = tmp;
      count++;
    }
    else break;
  }

  printf("%d\n",count);
  
}