#include <bits/stdc++.h>
using namespace std;
int main(){

  int L,N,ans=0;

  scanf("%d",&L);
  if(1<=L && L<=10000){
    scanf("%d",&N);
    if(1<=N && N<=10000){
      
      int W[N];
      
      for(int i=0;i<N;i++){
	scanf("%d",&W[i]);
	if(W[i]>L)break;
      }
      
      for(int i=0;i<N-1;i++){
	for(int j=0;j<N-i-1;j++){
	  if(W[j]>W[j+1]){
	    int temp = W[j];
	    W[j] = W[j+1];
	    W[j+1] = temp;
	  }
	}
      }
      
      for(int i=0;i<N;i++){
	if(L-W[i]>0){
	  ans++;
	  L=L-W[i];
	}
      }

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