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#include <fstream>
#define NMAX 100001
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int v[NMAX],lg[NMAX],i,j,n,maxx,p;
int main()
{
fin>>n;
for(i=1;i<=n;++i)
fin>>v[i];
lg[n]=1;
for(i=n-1;i>=1;i--)
{
maxx=0;
for(j=i+1;j<=n;++j)
if(v[i]<v[j]&&lg[j]>maxx) maxx=lg[j];
lg[i]=maxx+1;
}
maxx=0;
for(i=1;i<=n;++i)
if(lg[i]>maxx)maxx=lg[i],p=i;
fout<<maxx<<"\n";
fout<<v[p]<<" ";
for(i=p+1;i<=n;++i)
if(v[i]>v[p]&&lg[i]==maxx-1)
{
fout<<v[i]<<" ";
maxx--;
}
return 0;
}