#include<stdio.h>
using namespace std;

int main ()
{
	freopen("scmax.in","r",stdin);
	freopen("scmax.out","w",stdout);
	int n,a[100002],best[100002],p[100002],i,j,max,e=0,k;
	scanf("%d",&n);
	for(i=1;i<=n;i++)
		scanf("%d",&a[i]);
	for(i=n;i>0;i--){
		max=0;
		for(j=i;j<=n;j++)
			if(a[i]<a[j]&&max<best[j])
					max=j;
		if(max!=0){
			best[i]=best[max]+1;
			p[i]=max;}
		else{
			best[i]=1;
			p[i]=-1;}
		if(e<best[i]){
			k=i;
			e=best[i];}}
	printf("%d\n",e);
	while(p[k]!=-1){
		printf("%d ",a[k]);
		k=p[k];}
	printf("%d ",a[k]);
	return 0;
}