#include <fstream>

using namespace std;

const int Vmax = 100001;

int a[Vmax], dp[Vmax], anterior[Vmax];
int main(){
    ifstream fin("scmax.in");
    ofstream fout("scmax.out");
    int n;
    fin>>n;
    for(int i=1;i<=n;i++){
        fin>>a[i];
    }
    for(int i=1;i<=n;i++){
        int bestJ = 0;
        int tempJ = 0;
        for(int j=1;j<i;j++){
            if(dp[j] >= bestJ)
                tempJ = j;
            bestJ = max(bestJ, dp[j]);
        }
        if(a[i] > a[tempJ]){
            dp[i] = 1 + bestJ;
            anterior[i] = tempJ;
        }
        else
            dp[i] = 1;
    }
    int sol = 0;
    int maxI = 0;
    for(int i=1;i<=n;i++){
        if(max(sol, dp[i]) > sol)
            maxI = i;
        sol = max(sol, dp[i]);
    }
    fout<<sol;
    int final[Vmax];
    int curent = maxI;
    for(int i=1;i<=sol;i++){
        final[i] = a[curent];
        curent = anterior[curent];
    }
    fout<<'\n';
    for(int i=sol;i>=1;i--)
        fout<<final[i]<<" ";
    return 0;
}