#include<fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int v[100001],l[100001],n;
int main() {
int i,j;
fin>>n;
for(i=1;i<=n;i++) fin>>v[i];
l[n]=1;
for(i=n-1;i>=1;i--) {
	int max=0;
	for(j=i+1;j<=n;j++) 
		if(v[i]<v[j]&&l[j]>max) max=l[j];
	l[i]=max+1;
}
int max=0,pmax;
for(i=1;i<=n;i++) {
	if(l[i]>max) { max=l[i]; pmax=i; }
}
fout<<max<<endl;
fout<<v[pmax]<<" ";
max--;
int last=v[pmax];
for(i=pmax+1;i<=n;i++) 
	if(v[i]>last&&l[i]==max) {
		fout<<v[i]<<" ";
		last=v[i];
		max--;
	}

return 0;
}