#include<bits/stdc++.h>
using namespace std;

int main()
{
int L,N;scanf("%d\n%d",&L,&N);
vector<int> W(N);
for(int i=0;i<N;i++)scanf("%d ",&W[i]);
sort(W.begin(),W.end());
int ans=0,sum=0;
while(true)
{
    sum+=W[ans];
    if(sum>L)break;
    ans++;
    if(ans==N)break;
}
printf("%d\n",ans);
}