#include<bits/stdc++.h> using namespace std; #define rep(i,n) for(ll i=0;i<n;i++) #define repl(i,l,r) for(ll i=(l);i<(r);i++) #define per(i,n) for(ll i=n-1;i>=0;i--) #define fi first #define se second #define all(x) (x).begin(),(x).end() #define CST(x) cout<<fixed<<setprecision(x) using ll=long long; using vl=vector<ll>; using vvl=vector<vector<ll>>; using pl=pair<ll,ll>; template<class T> inline bool chmin(T& a, T b){ if(a>b){a = b;return true;}return false;} template<class T> inline bool chmax(T& a, T b){ if(a<b){a=b;return true;}return false;} const ll MOD=1000000007; const ll MOD9=998244353; const int inf=1e9; const ll INF=4e18; const ll dy[4]={1,0,-1,0}; const ll dx[4]={0,-1,0,1}; int main(){ int L,N;cin>>L>>N; vl info(N); rep(i,N)cin>>info[i]; sort(all(info)); int ans=0; rep(i,N){ if(L-info[i]>=0){ L-=info[i]; ans++; } else break; } cout<<ans<<endl; return 0; }