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Cod sursa(job #520666)
#include <iostream>
#include <fstream>
using namespace std;
ifstream in("scmax.in");
ofstream out("scmax.out");
int n;
int a[100000];
int best[100000];
int fiu[100000];
void citeste(){
in>>n;
for(int i = 0; i < n; i++){
in>>a[i];
}
// for(int i = 0; i < n; i++){
// out<<a[i]<< " " ;
// }
}
void solve(){
best[0] = 1;
fiu[0] = -1;
for(int i = 1; i < n; i++){
best[i] = 1;
fiu[i] = -1;
for(int j = i - 1; j >= 0; j--){
if(a[i] > a[j] && best[i] < best[j] + 1){
best[i] = best[j] + 1;
fiu[i] = j;
}
}
}
// for(int i = 0; i < n; i++){
// out<<best[i]<< " ";
// }
}
int getMaxBest(int limit){
int max = best[0];
for(int i = 1; i <= limit; i++){
if(best[i] > max){
max = best[i];
}
}
return max;
}
void showSecvMax(int i){
if(fiu[i] == -1){
out<<a[i]<< " ";
return;
}
showSecvMax(fiu[i]);
out<<a[i]<< " ";
}
void showResult(){
int pozMax = 1;
int max = best[1];
for(int i = 1; i < n; i++){
if(best[i] > max){
max = best[i];
pozMax = i;
}
}
out<<max<<"\n";
showSecvMax(pozMax);
}
int main(){
citeste();
solve();
showResult();
return 0;
}