#include "gondola.h"
#ifdef NYAOWO
#include "grader.cpp"
#endif
#include <bits/stdc++.h>
#define For(i, a, b) for(int i = a; i <= b; i++)
#define Forr(i, a, b) for(int i = a; i >= b; i--)
#define F first
#define S second
#define eb emplace_back
#define all(x) x.begin(), x.end()
#define sz(x) ((int)x.size())
#define int LL
using namespace std;
using LL = long long;
using pii = pair<int, int>;
const int MAXN = 100010;
int32_t valid(int32_t n, int32_t inputSeq[]) {
For(i, 0, n - 1) inputSeq[i]--;
vector<int> owo;
vector<int> al;
int p = -1;
For(i, 0, n - 1) {
int x = inputSeq[i];
if(x < n) p = i;
al.eb(x);
}
sort(all(al));
if(unique(all(al)) != al.end()) return 0;
if(p == -1) return 1;
For(i, 0, n - 1) {
int j = (p + i) % n;
int vj = (inputSeq[p] + i) % n;
if(inputSeq[j] != vj) return 0;
}
return 1;
}
//----------------------
int32_t replacement(int32_t n, int32_t gondolaSeq[], int32_t replacementSeq[]) {
return -2;
}
//----------------------
int32_t countReplacement(int32_t n, int32_t inputSeq[]) {
return -3;
}
