#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;
int h,n;
int wei[600];
long long int f[45010];
int main()
{
	freopen("diet.in","r",stdin);
	freopen("diet.out","w",stdout);
	scanf("%d%d",&h,&n);
	for(int i=1;i<=n;i++)
        scanf("%d",&wei[i]);
    for(int i=1;i<=n;i++)
      for(int j=h;j>=wei[i];j--)
        if(f[j-wei[i]]+wei[i]>f[j])
          f[j]=f[j-wei[i]]+wei[i];
    printf("%lld",f[h]);
	fclose(stdin);
	fclose(stdout);
	return 0;
}