# include<stdio.h>
int x, max,max1,poz,poz1,n,i,j,a[100010],l[100010],t[100010];
int main()
{
	freopen("scmax.in","r",stdin);
	freopen("scmax.out","w",stdout);
	scanf("%d\n",&n);
	for (i=1; i<=n; i++)
		scanf("%d ",&a[i]);
	l[n]=1; t[n]=-1;
	for (i=n-1; i>=1; i--)
	{
		max1=0;
		for (j=i; j<=n; j++)
			if (a[j]>a[i] && l[j]>max1) { max1=l[j]; poz=j; }
		l[i]=1+max1;
		t[i]=poz;
		if (l[i]>max) { max=l[i]; poz1=i; }
	}
	printf("%d\n",max);
	x=poz1;
	while (t[x]!=-1)
	{
		printf("%d ",a[x]);
		x=t[x];
	}
	printf("%d\n",a[x]);
	return 0;
}