#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
int valid(int n, int v[]) {
map<int, bool> freq;
int mi = -1;
for (int i = 0; i < n; i++) {
if (freq[v[i]]) return 0;
freq[v[i]] = 1;
if (v[i] <= n && (mi == -1 || v[i] < v[mi])) {
mi = i;
}
}
if (mi == -1) {
return 1;
}
int prevj = mi;
for (int j = mi + 1; j <= (n + mi - 1); j++) {
int i = j % n;
if (v[i] > n) continue;
// cout << prevj << ' ' << j << '\n';
// cout << v[prevj % n] << ' ' << (v[i]) << '\n';
// cout << abs(j - prevj) << ' ' << abs(v[i] - v[prevj % n]) << '\n';
// cout << '\n';
if (v[i] < v[prevj % n] or abs(j - prevj) != abs(v[i] - v[prevj % n])) return 0;
prevj = j;
}
return 1;
}
//----------------------
int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
return -2;
}
//----------------------
int countReplacement(int n, int inputSeq[])
{
return -3;
}
