#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC target ("sse4")
#define endl "\n"
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
template<class T, class T2> inline bool chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline bool chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
const ll mod = 1e9 + 7;
template<class T> inline void fix(T &x) {if(labs(x) >= mod) {x %= mod;} if(x < 0) {x += mod;}}
#define out(x) cout << __LINE__ << ": " << (#x) << " = " << (x) << endl
bool different(int n, int inputSeq[]) {
vector<int> ret;
for(int i = 0; i < n; i ++) {
ret.push_back(inputSeq[i]);
}
sort(ret.begin(), ret.end());
for(int i = 0; i < n - 1; i ++) {
if(ret[i] == ret[i + 1]) {
return false;
}
}
return true;
}
int valid(int n, int inputSeq[]) {
int ind = -1;
for(int i = 0; i < n; i ++) {
if(inputSeq[i] <= n) {
ind = i;
break;
}
}
if(ind == -1) {return different(n, inputSeq);}
int rot = (-inputSeq[ind] + ind + 1 + n) % n;
rotate(inputSeq, inputSeq + rot, inputSeq + n);
for(int i = 0; i < n; i ++) {
if(inputSeq[i] <= n && inputSeq[i] != i + 1) {
return 0;
}
}
return different(n, inputSeq);
}
//----------------------
int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
return -2;
}
//----------------------
int countReplacement(int n, int inputSeq[])
{
return -3;
}
