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#include<iostream>
#include<fstream>
#include<cmath>
#include<algorithm>
#include<vector>
#include<bitset>
#include<cstring>
#include<queue>
#include<stack>
#define ull unsigned long long
#define ll long long
#define pb push_back
#define FOR(a,b,c) for (int a=b;a<=c; ++a)
#define ROF(a,b,c) for (int a=b;a>=c; --a)
using namespace std;
ifstream f("subsir2.in");
ofstream g("subsir2.out");
int N;
int v[5010],best[5010],pre[5010],urm[5010];
bool verif[5010];
void afiseaza(int x) {
if (x!=0) {
afiseaza(pre[x]);
g<<x<<' ';//cout<<v[x]<<' ';
}
}
int main()
{
f>>N;
FOR (i,1,N) {
f>>v[i];
}
best[1]=1;
urm[1]=5010;
int max1=1;
FOR (i,2,N) {
urm[i]=5010;
best[i]=5010;
FOR (j,1,i-1) {
if (v[j]<=v[i]) {
verif[j]=true;
if (urm[j]>v[i] && (best[j]+1<best[i] || (best[j]+1==best[i] && v[pre[i]]>v[j]))) {
best[i]=best[j]+1;
pre[i]=j;
}
if (urm[j]>v[i]) {
urm[j]=v[i];
}
}
}
if (best[i]==5010) {
best[i]=1;
}
/*
if (best[i]>max1) {
max1=best[i];
}*/
}
/*
FOR (i,1,N) {
cout<<best[i]<<' ';
}
cout<<'\n';
FOR (i,1,N) {
cout<<pre[i]<<' ';
}
cout<<'\n';
FOR (i,1,N) {
cout<<urm[i]<<' ';
}
cout<<'\n';
FOR (i,1,N) {
cout<<verif[i]<<' ';
}
cout<<'\n';
*/
int min1=5010,x=0;
ROF (i,N,1) {
if (!verif[i]) {
if (best[i]<min1) {
min1=best[i];
x=i;
}
else if (best[i]==min1 && v[x]>v[i]) {
min1=best[i];
x=i;
}
}
}
g<<min1<<'\n';
afiseaza(x);
f.close();g.close();
return 0;
}