#include <stdio.h>
using namespace std;
long j,i,N,crt,nr[100001],max[100001],next[100001],gmax,sf;

int main ()
{
	freopen("scmax.in", "r", stdin);
	freopen("scmax.out", "w", stdout);
	scanf("%d", &N);
	for (i=1; i<=N; i++)
	{
		scanf("%d", &nr[i]);
	}
	for (i=N; i>=1; i--)
	{
		max[i]=1;
		gmax=0;
		for (j=N; j>=i+1; j--)
			if (nr[i]<nr[j] && max[j]>max[gmax]) gmax=j;
		if (gmax) max[i]=max[gmax]+1;
		if (max[i]>max[sf]) sf=i;
		next[i]=gmax;
	}
	printf("%d\n", max[sf]);
	crt=nr[sf];
	for (i=sf; next[i]; i=next[i]) printf("%d ", nr[i]);
	printf("%d", nr[i]);
	//printf("\n");
	//for (i=1; i<=N; i++) printf("%d ", next[i]);
	return 0;
}