#include <bits/stdc++.h> #include "gondola.h" using namespace std ; const int N = 3e5 + 7 ; int valid(int n, int inputSeq[]){ vector<int> vis(N , 0) ; int cur = inputSeq[0] -1 ; for(int i = 0 ; i < n; i++){ if(vis[inputSeq[i]]++)return 0 ; if(--inputSeq[i]!=cur) return 0 ; cur = (cur+1) %n ; } return 1 ; } int replacement(int n, int gondolaSeq[], int replacementSeq[]) { return -2; } int countReplacement(int n, int inputSeq[]) { return -3; }