#include "gondola.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
typedef long long ll;
typedef pair<long long, long long> pll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<ll> vl;
int valid(int n, int inputSeq[])
{
int pos = -1;
for(int i = 0; i < n; i++){
if(inputSeq[i] == 1){
pos = i;
break;
}
}
bool seq = true;
int at = 1, lim = pos;
while(pos < n){
if(inputSeq[pos] == at){
pos++;
at++;
}
else{
seq = false;
break;
}
}
if(!seq) return 0;
pos = 0;
while(pos < lim){
if(inputSeq[pos] == at){
pos++;
at++;
}
else{
seq = false;
break;
}
}
if(!seq) return 0;
return 1;
}
int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
int pos = -1;
for(int i = 0; i < n; i++){
if(gondolaSeq[i] >= 1 && gondolaSeq[i] <= n){
pos = i;
break;
}
}
if(pos == -1){
vi arr(n);
for(int i = 0; i < n; i++) arr[i] = gondolaSeq[i];
sort(arr.begin(), arr.end());
int at = 1, j = 0, rez =0;
for(int i = 0; i < n; i++){
while(at < arr[i]){
replacementSeq[j++] = at++;
rez++;
}
at++;
}
return rez;
}
else{
int need[n];
bool done[n+1];
memset(done, false, sizeof done);
int at = gondolaSeq[pos];
while(at <= n){
at++;
pos++; pos%=n;
}
int here = 1;
for(int i = pos; i < n; i++) need[i] = here++;
for(int i = 0; i < pos; i++) need[i] = here++;
vector<pii> arr;
for(int i = 0; i < n; i++){
if(need[i] == gondolaSeq[i]) done[need[i]] = true;
else{
arr.pb(mp(gondolaSeq[i], i));
}
}
sort(arr.begin(), arr.end());
at = n + 1;
int j = 0, rez = 0;
//cout<<"ANS: "<<endl;
for(int i = 0; i < (int)arr.size(); i++){
int where = arr[i].second, val = arr[i].first;
replacementSeq[j++] = need[where];
rez++;
while(at < val){
replacementSeq[j++] = at++;
rez++;
}
at++;
}
return rez;
}
}
//----------------------
int countReplacement(int n, int inputSeq[])
{
return -3;
}
