#include<bits/stdc++.h>
typedef long long ll;
typedef unsigned long long ull;
using namespace std;
#define pb push_back
int dy[]={0, 0, 1, -1, 1, 1, -1, -1};
int dx[]={1, -1, 0, 0, 1, -1, -1, 1};

#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n) for (int i=0;i<(n);i++)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)
#define mp make_pair
#define fi first
#define sc second
int w[10000];
int main(){
    int l,n;

    scanf("%d%d",&l,&n);
    REP(i,n)
        scanf("%d",w + i);

    sort(w,w + n);
    int c = 0;
    int lc = 0;
    while(c < n && lc + w[c] <= l){
        lc += w[c];c++;
    }
    printf("%d\n",c);
    return 0;
}