#include<fstream>
using namespace std;
int a[100000],b[100000],c[100000][2],n,d[100000],i,j,m,p;
void sir()
{
	j=0;
	d[j++]=a[c[p][0]];
	for(i=c[p][0]+1;i<=c[p][1];i++)
		if(a[i]>d[j-1] && a[i]<=a[c[p][1]])
			d[j++]=a[i];
	for(i=0;i<j;i++)
		printf("%d ",d[i]);
	printf("\n");
}
int main()
{
	freopen("scmax.in","r",stdin);
	scanf("%d",&n);
	for(i=0;i<n;i++)
	{
		scanf("%d",&a[i]);
		b[i]=1;
		c[i][0]=c[i][1]=i;
		for(j=i-1;j>=0;j--)
			if(a[j]<a[i])
				if(m<b[j]+1)
				{
					m=b[i]=b[j]+1;
					p=i;
					c[i][0]=c[j][0];
					break;
				}
	}
	freopen("scmax.out","w",stdout);
	printf("%d\n",m);
	sir();
	return 0;
}