#include<stdio.h>
int main()
{
	int i,n,v[100000],v2[100000],aux=0,poz,j,pp,max;
	freopen("scmax.in","r",stdin);
	freopen("scmax.out","w",stdout);
	scanf("%d",&n);
	for(i=1;i<=n;i++)
		scanf("%d",&v[i]);
	v2[n]=1;
	for(i=n-1;i>=1;i--)
	{
		max=0;
		for(j=i+1;j<=n;j++)
			if(v2[j]>max&&v[j]>v[i])
				max=v2[j];
		if(pp==0)
			v2[i]=v2[poz]+1;
		else
			v2[i]=1;
		v2[i]=max+1;
		if(v2[i]>aux)
			aux=v2[i];
	}
	printf("%d\n",aux);
	for(i=1;i<=n;i++)
		if(v2[i]==aux)
		{
			printf("%d ",v[i]);
			aux--;
		}
	return 0;
}