#include<iostream>
#include<vector>
#include<algorithm>

int main(){
    int l;
    int n;
    std::cin>>l>>n;
    std::vector<int> w(n);
    for(int& element : w){
        std::cin>>element;
    }
    std::sort(w.begin(),w.end());
    int count=0;
    while(l>=w[count]){
        l-=w[count];
        count++;
    }
   std::cout<<count;
}