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

void sort(int n,int * w){
    int i,j,mini,tmp;
    for(i=0;i<n;i++){
        mini=i;
        for(j=i+1;j<n;j++){
            if(w[j]<w[mini]){
                mini=j;
            }
        }
        if(mini!=i){
            tmp = w[i];
            w[i] = w[mini];
            w[mini] = w[i];
        }
    }
}


int main(int argc, char * argv[]){
    int l;
    int n;
    int ans=0;
    int i;
    int rest;
    int * w;
    scanf("%d",&l);
    scanf("%d",&n);
    w = (int *)calloc(n,sizeof(int));
    for(i=0;i<n;i++){
        scanf("%d",w[i]);
    }
    sort(n,w);
    for(;;){
        rest=l-w[i];
        if(rest<0) break;
        ans++;
        i++;
    }
    printf("%d\n",ans);
    return 0;
}