#include <bits/stdc++.h>
using namespace std;
using ll=long long;
int n,l;
ll a[10005];
void solve()
{
        cin>>l>>n;
        for(int i=0;i<n;i++)cin>>a[i];
        sort(a,a+n);
        int i=0;
        ll sum=0;
        while(i<n&&sum<l)
        {
                if(sum+a[i]>l)break;
                sum+=a[i++];
        }
        cout<<i<<'\n';
}
int main()
{
        ios::sync_with_stdio(false);cin.tie(NULL);
        int tc=1;
        // cin>>tc;
        while(tc--)solve();
        return 0;
}