#include <stdio.h>
#define R for(int i = 0;i < n;i++)
void i(int a[],int n){
	R scanf("%d",&a[i]);
}
void z(const int a[],int b[],int n){
	R b[i] = a[i];
}
int y(const int a[],int n){
	int m,nb;
	m = a[0]; nb = 0;
	R{if(m > a[i]) {m = a[i]; nb = i;}}
	return(nb);
}
void x(const int a[],int b[],int n){
	int nb; int t[10000];
	z(a,t,n);
	R{nb = y(t,n); b[i] = t[nb]; t[nb] = 10001;}
}
int main (void){
	int l,n,c=0; int w[10000];
	scanf("%d%d",&l,&n); i(w,n); x(w,w,n);
	R{if(l >= w[i]){l -= w[i]; c++;}else break;}
	printf("%d\n",c);
	return(0);
}