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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int dp[100001],a[100001];
int main()
{
int n,i,j,poz,maxx=0,maxnr=0;
fin>>n;
for(i=1;i<=n;i++)
{
fin>>a[i];
dp[i]=1;
}
for(i=1;i<=n;i++)
for(j=1;j<i;j++)
if(a[j]<a[i] && dp[j]+1>dp[i])
{
dp[i]=dp[j]+1;
if(dp[i]>maxx)
{
maxx=dp[i];
poz=i;
}
}
fout<<maxx<<'\n';
int max2=maxx;
maxx--;
maxnr=a[poz];
i=n;
while(i>0)
{
if(dp[i]==maxx && a[i]<maxnr && i<poz)
{
maxx--;
maxnr=a[i];
i--;
}
else
{
dp[i]=0;i--;
}
}
dp[poz]=max2;
for(i=1;i<=n;i++)
if(dp[i]!=0)
fout<<a[i]<<" ";
return 0;
}