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

int cmp(const void *a,const void *b){
    if(*(int*)a>*(int*)b){return 1;}
    else if(*(int*)a<*(int*)b){return -1;}
    else {return 0;}
}


int main(void){
int l,n,w[10005];
int box=0;
scanf("%d %d",&l,&n);


for(int i=0;i<n;i++){
    scanf("%d",&w[i]);
}

qsort(w,n,sizeof(int),cmp);

for(int i=0;i<n;i++){
    if(l-w[i]>=0){box++;l=l-w[i];}
    else{break;}
}
printf("%d\n",box);
}