#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <string>
#include <cmath>
#include <algorithm>
#include <vector>
#include <queue>
#include <stack>

#define INF 100000000000000

using namespace std;

int main(){
    int L,N,W[10000],ans=0;
    
    scanf("%d%d",&L,&N);
    
    for(int i=0;i<N;i++){
        scanf("%d",&W[i]);
    }
    
    sort(W,W+N);
    
    for(int i=0;(L>=W[i] && i<N);i++){
        ans++;
        L-=W[i];
    }
    
    printf("%d\n",ans);
    
    
    return 0;
}