#include <fstream>
using namespace std;
ifstream cin ("scmax.in");
ofstream cout ("scmax.out");

int n, A[100010],D[100010],poz[100010],m=1;

void afisare(int q){
    if (poz[q]!=0) afisare(poz[q]),cout<<A[poz[q]]<<" ";
    else return;
}

int main(){
    cin>>n;
    for (int i=1; i<=n; i++) cin>>A[i],D[i]=1;
    for (int i=2; i<=n; i++){
        for (int j=i-1; j; j--){
            if (A[i]>A[j] && D[j]+1>D[i]) D[i]=D[j]+1,m=i,poz[i]=j;
        }
    }
    poz[n+1]=m;
    cout<<D[m]<<"\n";
    afisare(poz[n+1]);
    cout<<A[m]<<" ";
    return 0;
}