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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int v[100001],n,dp[100001];
int smax=0,maxi;
void sDp(int d){
int k=d-1;
int ok=0;
while(dp[k]==maxi&&k>=1){
if(v[d]>v[k]){
dp[d]=dp[k]+1;
maxi=dp[d];
ok=1;
break;
}
k--;
}
if(ok==0)
dp[d]=dp[d-1];
}
int main(){
fin>>n;
for(int i=1;i<=n;i++){
fin>>v[i];
}
dp[1]=1;
maxi=1;
for(int i=2;i<=n;i++){
sDp(i);
}
fout<<maxi<<endl;
int k=1;
for(int i=1;i<n;i++){
if(dp[i+1]>dp[i])
fout<<v[i]<<" ";
}
if(dp[n]>dp[n-1])
fout<<v[n];
return 0;
}