#include <iostream>
#include <algorithm>
using namespace std;

int main(){
    int l,n;
    cin >> l;
    cin >> n;

    int w[n];
    for(int i = 0;i < n;i++){
        cin >> w[i];
    } 

    sort(w,w+n);

    int count = 0 , i;

    for(i = 0;i < n;i++){
        if(count + w[i] > l){
            break;
        }else{
            count += w[i];
        }
    }

    cout << i << endl;
}