#include<fstream>
using namespace std;
#define IN "scmax.in"
#define OUT "scmax.out"
#define MaxN 100001
FILE *f=fopen(IN,"r"), *g=fopen(OUT,"w");
long long a[MaxN], l[MaxN], i, j, maxim, n, poz, max2;
int main()
{
	fscanf(f,"%lld", &n);
	for(i=1; i<=n; ++i)
		fscanf(f,"%lld", &a[i]);
	
	l[n]=1;
	max2=0;
	for(j=n-1; j>=1; --j)
	{
		maxim=0;
		for(i=j+1; i<=n; i++)
		{
			if(a[i]>a[j] && l[i]>maxim)
				maxim=l[i];
		}
		l[j]=maxim+1;
		if(l[j]>max2)
		{
			max2=l[j];
			poz=j;
		}
	}
	fprintf(g,"%lld\n",max2);
	fprintf(g,"%lld ",a[poz]);
	max2--;
	for(i=poz; i<=n; i++)
	{
		if(l[i]==max2)
		{
			fprintf(g,"%lld ",a[i]);
			max2--;
		}
	}
	fclose(f);
	fclose(g);
	exit(0);
}