using namespace std;
#include<bits/stdc++.h>
void _main();int main(){cin.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(30);_main();return 0;}
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
typedef long long ll;typedef long double ld;
// template<class ll>inline bool chmax(ll&a,ll b){if(a<b){a=b;return 1;}return 0;}
// template<class ll>inline bool chmin(ll& a,ll b){if(a>b){a=b;return 1;}return 0;}
#define rep1(a)          for(int i = 0; i < (a); i++)
#define rep2(i, a)       for(int i = 0; i < (a); i++)
#define rep3(i, a, b)    for(int i = (a); i < (b); i++)
#define rep4(i, a, b, c) for(int i = (a); i < (b); i += (c))
#define overload4(a, b, c, d, e, ...) e
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define ALL(x) std::begin(x),std::end(x)
#define rALL(x) std::rbegin(x),std::rend(x)
#define INF ((1LL<<62)-(1LL<<31))
#define bit(x,i) (((x)>>(i))&1)
#define fi first
#define se second
#define pb push_back
#define Endl endl
#define spa " "
#define YesNo(x) cout<<(x?"Yes":"No")<<endl;

//コンパイル時の引数にBLUEBERRYを渡すとdeb関数が使える
#ifdef BLUEBERRY
#define deb print
#else
#define deb 
#endif
//！？！？
#define O print
//可変長引数で入力を受け取りつつ変数を宣言
inline void scan(){}
template<class Head,class... Tail>
inline void scan(Head&head,Tail&... tail){std::cin>>head;scan(tail...);}
#define LL(...) ll __VA_ARGS__;scan(__VA_ARGS__)
#define STR(...) string __VA_ARGS__;scan(__VA_ARGS__)
//vectorのcin
template<typename T>
std::istream &operator>>(std::istream&is,std::vector<T>&v){for(T &in:v){is>>in;}return is;}
//vectorのcout
template<typename T>
std::ostream &operator<<(std::ostream&os,const std::vector<T>&v){for(auto it=std::begin(v);it!=std::end(v);){os<<*it<<((++it)!=std::end(v)?" ":"");}return os;}
//x,y,x,yを渡すとldで距離を返す
long double my_distance(long double xi,long double yi,long double xj,long double yj){return sqrt(abs((xi-xj)*(xi-xj))+abs((yi-yj)*(yi-yj)));}
//可変長引数のprint関数
void print(){cout << '\n';}
template<class T, class... Ts>
void print(const T& a, const Ts&... b){cout << a;(cout << ... << (cout << ' ', b));cout << '\n';}
//可変長引数のmin
template<class... T>
constexpr auto min(T... a){return min(initializer_list<common_type_t<T...>>{a...});}
//可変長引数のmax
template<class... T>
constexpr auto max(T... a){return max(initializer_list<common_type_t<T...>>{a...});}
template<typename T,typename U>inline bool chmax(T&a,U b){if(a<b){a=b;return 1;}return 0;}
template<typename T,typename U>inline bool chmin(T&a,U b){if(a>b){a=b;return 1;}return 0;}


void solve();
void _main(){
    int testcase = 1;
    // cin >> testcase;
    for(;testcase--;){
        solve();
    }
}
void solve(){
    LL(l);
    LL(n);
    vector<ll>w(n);cin >> w;
    sort(ALL(w));
    ll now{};
    rep(i,n){
        now+=w[i];
        if(now>l){
            O(i);
            exit(0);
        }
    }
    O(n);
}