#include <iostream>
#include <string>
#define N 10000
using namespace std;
void sort(int n, int a[]) {
    int i, j, tmp;
    for (i=0; i<=n-2; i++) {
        for (j=i+1; j<n; j++) {
            if (a[i] > a[j]) {
                tmp = a[i];
                a[i] = a[j];
                a[j] = tmp;
            }
        }
    }
}
int main() {
    int i, width, n, a[N], sum=0, count=0;
    cin >> width >> n;
    for (i=0; i<n; i++) {
        cin >> a[i];
    }
    sort(n, a);
    while (sum <= width) {
        sum += a[count];
        count++;
        if (count == n) break;
    }
    if (count != n || sum > width) sum -= a[--count];
    cout << count << endl;
    return 0;
}