#include <bits/stdc++.h>

using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
typedef long long ll;
int dp[100001],n,v[100001],maxim;
int main()
{
    ios_base::sync_with_stdio(false);
    fin.tie(0);
    fout.tie(0);
    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]=max(dp[j]+1,dp[i]);
                if(dp[i]>maxim)
                    maxim=dp[i];
            }
        if(dp[i]>maxim)
            maxim=dp[i];
    }
    fout<<maxim<<'\n';
    int cr=0;
    int pls=maxim;
    for(int i=1;i<=n;i++)
        if(dp[i]==pls)
        {
            if(v[i]>cr)
            {
                cr=v[i];
                pls--;
                fout<<cr<<" ";
            }
        }
    return 0;
}