#include <bits/stdc++.h>
using namespace std;

ifstream fin("scmax.in");
ofstream fout("scmax.out");

int n, maxim, p;
int v[100005];
int dp[100005];

int main()
{
    fin>>n;
    for(int i=1; i<=n; i++)
        fin>>v[i];
    dp[n]=1;
    for(int i=n-1; i>=1; i--)
    {
        //dp[i]=1;
        for(int j=i+1; j<=n; j++)
        {
            if(v[j]>v[i] && dp[i] < dp[j]+1)
                dp[i] = dp[j]+1;
        }
    }
    for(int i=2; i<=n; i++)
        if(dp[i]>maxim)
            maxim=dp[i], p=i;
    fout<<maxim<<"\n";
    fout<<v[p]<<" ";
    while(1)
    {
        bool gasit=0;
        for(int i=p+1; i<=n; i++)
        {
            if(dp[i]==dp[p]-1 && v[p]<v[i])
            {
                fout<<v[i]<<" ";
                p=i;
                gasit=1;
                break;
            }
        }
        if(!gasit)
            break;
    }
    return 0;
}