#include<fstream>
using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
int n,i,nr,k=1;
long long a[100001],b[100001];
int main()
{ f>>n;
  for(i=1;i<=n;i++) { f>>a[i];
                      if(a[i]<=a[i-1]) { i--;
                                         n--;
					                    }
					  else { b[k]=a[i];
					         k++;
					         nr++;
					        }
                     }
  g<<nr<<'\n';
  for(k=1;k<=nr;k++) g<<b[k]<<" ";
  return 0;
}