#include<fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n,nr,v[100001],val[100001],best[100001],par[100001],k,i,aux;
inline void caut_binar()
{int step;
    for (step=1;step<nr;step<<=1);
    for (aux=0;step;step>>=1)
        if (aux+step<nr && val[aux+step]<= v[i])
           aux += step;
}
int main()
{   fin >> n;
    for (i=1;i<=n;++i)
		fin >> v[i];
	for (i=1;i<=n;++i)
	{   if (v[i] > val[nr])
		{   val[++nr] = v[i];
			best[i] = nr;
			par[nr] = i;
		}
		else
		{   caut_binar();
			if (val[aux] != v[i])
			{   ++aux;
			    val[aux] = v[i];
                par[aux] = i;				
			    best[i] = aux;
			}
			else
				best[i] = aux;
		}
	}
	long long max1 = 0;
	max1 = 1LL<<40;
	fout << nr << '\n';
	k = nr;
	int rasp[100001],ar=nr;
	for (i=n;i>=1;--i)
     	if (best[i] == k && max1 > v[i])
		{   rasp[ar] = v[i];
		    --ar;
		    --k;
			max1 = v[i];
		}	
	for (i=1;i<=nr;++i)
		fout << rasp[i] << " ";
	return 0;
}