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#include<fstream>
#include<iostream>
#include<algorithm>
#include<cmath>
#include<climits>
#include<iomanip>
#include<cstring>
#include<bitset>
#define MAX 100000
using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
//ifstream f("in.in");
//ofstream g("out.out");
int aib[MAX+5];
int n;
int sol = -1;
int v[MAX+5],s[MAX+5];
void update(int val,int poz){
for(int i=poz;i<=n;i+=(i&-i)){
aib[i]+=val;
}
}
int query(int poz){
int val=0;
for(int i=poz;i>=1;i-=(i&-i)){
val+=aib[i];
}
return val;
}
int main(){
f>>n;
for(int i=1;i<=n;i++){
f>>v[i];
s[i] = v[i];
}
sort(s+1,s+n+1);
int st,dr,mij,poz=-1;
///find max
for(int i=1;i<=n;i++){
st=1,dr=n;
while(st<=dr){
mij = (st+dr)/2;
if(s[mij] >= v[i]){
poz = mij;
dr = mij-1;
}else{
st = mij+1;
}
}
//cout<<poz<<" ";
sol = max(sol,query(poz-1)+1);
if((query(poz)-query(poz-1))==0){
update(1,poz);
}
}
g<<sol<<'\n';
///reset
for(int i=1;i<=n;i++){
aib[i] = 0;
}
///print sequence
for(int i=1;i<=n;i++){
st=1,dr=n;
while(st<=dr){
mij = (st+dr)/2;
if(s[mij] >= v[i]){
poz = mij;
dr = mij-1;
}else{
st = mij+1;
}
}
if(query(poz-1)+1 == sol){
for(int j=1;j<poz;j++){
if((query(j)-query(j-1))==1){
g<<s[j]<<" ";
}
}
g<<v[i];
i=n+1;
break;
}
if((query(poz)-query(poz-1))==0){
update(1,poz);
}
}
f.close();
g.close();
return 0;
}