#include <stdio.h>
#include <stdlib.h>

int compare_int(const void *a, const void *b)
{
    return *(int*)a - *(int*)b;
}

int main()
{
    int i,l,n,w[10010] = {0},sum = 0,ans = 0;
    
    scanf("%d",&l);
    scanf("%d",&n);
    for (i = 0; i < n; i++) {
        scanf("%d",&w[i]);
    }
    
    qsort(w, n, sizeof(int), compare_int);
    
    while(ans < n){
        sum += w[ans];
        if(sum > l) break;
        ans++;
    }
    printf("%d",ans);
    return 0;
}