#include<stdio.h>
static int lung[100000],v[100000],leg[100000];
int caut_binar(int nr,int st,int dr)
{
    int ult_completat=dr,mij;
   while(st<dr)
   {
       mij=(st + dr)/2;
       if(v[lung[mij]] <=nr)
        st=mij +1;
        else dr=mij;
   }
   while(v[lung[mij]] >=nr)
    --mij;
    leg[++ult_completat]=mij;
    lung[ult_completat]=lung[mij]+1;
}
void afis_rec(FILE *g,int ult_completat,int poz)
{
    if(ult_completat==0)
        return;
    afis_rec(g,--ult_completat,leg[poz]);
    fprintf(g,"%i ",v[poz]);
}
int main()
{
    int n,i,j;
    FILE *f=fopen("scmax.in","rt");
    FILE *g=fopen("scmax.out","wt");
    fscanf(f,"%i",&n);
    for(i=0;i<n;i++)
        fscanf(f,"%i",&v[i]);
    fclose(f);
    lung[0]=0;
    int ult_completat=0;
    leg[0]=-1;
    for(i=1;i<n;i++)
        {
            if(v[i]>v[lung[ult_completat]])
                {
                    lung[++ult_completat]=i;
                    leg[i]=lung[ult_completat-1];
                }
                else
                {
                    j=ult_completat;
                    while(j!=-1 && v[lung[j]]>=v[i] )
                        j--;
                    lung[++j] = i;
                    if(j==0)
                        leg[i]=-1;
                        else
                        leg[i]=lung[j-1];
                }
        }
    fprintf(g,"%i\n",ult_completat+1);
   int poz=lung[ult_completat];
   ult_completat++;
   afis_rec(g,ult_completat,poz);
   fclose(g);
   return 0;
}