#include <stdio.h>
int n,i,j,a[100003],b[100003];
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;
	for(i=n-1;i>=1;i--)
	{
		b[i]=1;
		for(j=i+1;j<=n;j++)
			if(a[i]<a[j] && b[i]<b[j]+1)
			{
				b[i]=b[j]+1;
				break;
			}
	}
	int max=b[1],p=1;
	for(i=2;i<=n;i++)
		if(b[i]>max)
		{	
			max=b[i];
			p=i;
		}
	printf("%d\n",max);
	printf("%d ",a[p]);
	max=a[p];
	for(i=p+1;i<=n;i++)
		if(a[i]>max)
		{
			max=a[i];
			printf("%d ",max);
		}
	return 0;
}