This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho
#include "gondola.h"
using ll=long long;
using ld=long double;
int const INF=1000000005;
ll const LINF=1000000000000000005;
ll const mod=1000000007;
ld const PI=3.14159265359;
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define endl '\n'
#define CODE_START ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
int valid(int n,int a[]){
int mn=INF,pos=-1;
map<ll,ll>viz;
for(int i=0;i<n;i++)
{
viz[a[i]]++;
if(a[i]<mn){
mn=a[i];
pos=i;
}
}
for(ll i=0;i<n;i++)
{
if(viz[a[i]]>=2){
return 0;
}
}
if(mn>n){
return 1;
}
int b[200005];
for(int i=0;i<n;i++)
{
b[i]=a[i];
}
a[0]=b[pos];
ll val=0;
for(ll i=pos+1;i<n;i++)
{
a[i-pos]=b[i];
val=i-pos;
}
val++;
for(ll i=0;i<pos;i++)
{
a[val]=b[i];
val++;
}
ll x=a[0];
x++;
b[0]=a[0];
for(ll i=1;i<n;i++)
{
x%=n;
if(x==0){
x=n;
}
b[i]=x;
x++;
}
for(ll i=1;i<n;i++)
{
if(b[i]!=a[i]){
if(a[i]<=n){
return 0;
}
}
}
return 1;
}
int replacement(int n,int a[],int g[]){
int mn=INF,pos=-1;
map<ll,ll>viz;
for(int i=0;i<n;i++)
{
viz[a[i]]++;
if(a[i]<mn){
mn=a[i];
pos=i;
}
}
int b[200005],val;
for(int i=0;i<n;i++)
{
b[i]=a[i];
}
if(mn>n){
goto Next;
}
a[0]=b[pos];
val=0;
for(ll i=pos+1;i<n;i++)
{
a[i-pos]=b[i];
val=i-pos;
}
val++;
for(ll i=0;i<pos;i++)
{
a[val]=b[i];
val++;
}
for(int i=0;i<n;i++)
{
b[i]=a[i];
}
val=mn;
for(ll i=0;i<n;i++)
{
ll x=i-mn+1;
if(x<0){
x+=n;
}
a[i]=b[x];
}
Next:
vector<int>ans;
multiset<pair<ll,ll>>s;
int mx=0;
ll check=0;
for(ll i=0;i<n;i++)
{
mx=max(mx,a[i]);
if(a[i]==n+1){
check=1;
}
if(a[i]>n){
s.insert(mp(a[i],i+1));
}
}
if(check==0){
for(ll i=0;i<n;i++)
{
if(a[i]>n){
s.insert(mp(n+1,i+1));
s.erase(s.find(mp(a[i],i+1)));
break;
}
}
}
while(!s.empty()){
auto it=s.begin();
pair<ll,ll>p=*(it);
if(p.f>mx){
break;
}
s.erase(s.begin());
it=s.begin();
pair<ll,ll>x=*(it);
ans.pb(p.s);
if(x.f==p.f+1){
continue;
}
s.insert(mp(p.f+1,p.f));
}
ll res=ans.size();
for(int i=0;i<res;i++)
{
g[i]=ans[i];
}
return res;
}
int countReplacement(int n,int a[]){
return 0;
}
/*
int32_t main(){
int n,a[100005],idk[100005];
cin>>n;
for(int i=0;i<n;i++)
{
cin>>a[i];
}
cout<<replacement(n,a,idk)<<endl;
}
*/
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