#include <bits/stdc++.h>
using namespace std;
#define maxn 510
#define maxH 45010

int H,n,s[maxn],f[maxH];

inline void init_() {
	freopen("a.txt","r",stdin);
}

inline int read_() {
	int x=0,f=1;
	char c=getchar();
	while(c<'0'||c>'9') {
		if(c=='-') f=-1;
		c=getchar();
	}
	while(c>='0'&&c<='9') {
		x=x*10+c-'0';
		c=getchar();
	}
	return x*f;
}

inline void readda_() {
	H=read_();n=read_();
	for(int i=1;i<=n;i++) {
		s[i]=read_();
	}
}

inline void work_() {
	memset(f,0,sizeof(f));
	for(int i=1;i<=n;i++) {
		for(int j=H;j>=0;j--) {
			if(j>=s[i]) f[j]=max(f[j],f[j-s[i]]+s[i]);
			else f[j]=max(f[j],0);
		}
	}
	printf("%d",f[H]);
}

int main() {
	init_();
	readda_();
	work_();
	return 0;
}