#include<iostream>
#include<cstdio>
#include<cctype>
#define gys mylove
using namespace std;
int h,n;
int a[501],b[45001];
inline void in(int &x)
{
    x=0;int f=1;char t=getchar();
    while(!isdigit(t)){if(t=='-')f=-1;t=getchar();}
    while(isdigit(t)){x=x*10+t-48;t=getchar();}
    x*=f;
}
inline void input(){
	in(h);in(n);
	for(int i=1;i<=n;i++) in(a[i]);
}
inline void dpwork(){
	for(int i=1;i<=n;i++)
	 for(int v=h;v>=a[i];v--)
	  if(b[v-a[i]]+a[i]>b[v]) b[v]=b[v-a[i]]+a[i];//b[v]=(b[v-a[i]]+a[i]>b[v])? b[v-a[i]]+a[i]:b[v];
	printf("%d",b[h]);
}
int Main(){
	freopen("diet.in","r",stdin);
	freopen("diet.out","w",stdout);
	input();
	dpwork();
	return 0;
}
int main(){;}
int gys=Main();