#include<fstream.h>
int v[201],l[201],u[201];
int main()
{
int n,i,j,p,c;
ifstream in("scmax.in");
ofstream out("scmax.out");
in>>n;
for(i=1;i<=n;i++)
	in>>v[i];
for(i=n;i>=1;i--)
	{
	j=i+1;
	c=0;
	p=0;
	while(j<=n)
		{
		if(v[j]>v[i]&&l[j]>c)
			{
			c=l[j];
			p=j;
			}
		j++;
		}
	l[i]=1+c;
	u[i]=p;
	}
for(i=1;i<=n;i++)
	{
	if(l[i]>c)
		{
		c=l[i];
		p=i;
		}
	}
out<<c;
i=p;
while(i!=0)
	{
	out<<v[i]<<" ";
   i=u[i];
	}


in.close();
out.close();
return 0;
}