#include <stdio.h>
int n,i,j,a[100003],b[100003],p,poz[100003],max;
int main()
{
	freopen("scmax.in","r",stdin);
	freopen("scmax.out","w",stdout);
	scanf("%d",&n);
	for(i=1;i<=n;i++)
		scanf("%d",&a[i]);
	b[n]=1;
	poz[n]=-1;
	max=1;
	p=n;
	for(i=n-1;i>=1;i--)
	{
		b[i]=1;
		poz[i]=-1;
		for(j=i+1;j<=n;j++)
			if(a[i]<a[j] && b[i]<b[j]+1)
			{
				b[i]=b[j]+1;
				poz[i]=j;
				if(b[i]>max) {max=b[i];p=i;}
			}
	}
	printf("%d\n",max);
	i=p;
	while(i!=-1)
	{
		printf("%d ",a[i]);
		i=poz[i];
	}
	return 0;
}