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#include <bits/stdc++.h>
using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
int n,i,ans,maxim,j,poz,nxt[100100],poz_ans,v[100100],L[100100];
int main()
{
f>>n;
for(i=1;i<=n;i++)
{
f>>v[i];
}
L[n]=1;
for(i=n-1;i>=1;i--)
{
maxim=0;
for(j=i+1;j<=n;j++)
{
if(v[j]>v[i] && L[j]>maxim)maxim=L[j],poz=j;
}
L[i]=maxim+1;
nxt[i]=poz;
if(L[i]>ans)ans=L[i],poz_ans=i;
}
g<<ans<<'\n';
while(poz_ans!=0)
{
g<<v[poz_ans]<<" ";
poz_ans=nxt[poz_ans];
}
return 0;
}