#include <iostream>
#include "gondola.h"
using namespace std;
int b[300005];
int cnt[300005];
int cha[300005];
bool cmp(int x, int y){
return b[x]<b[y];
}
int valid(int n, int a[]){
int cn=0;
int bruh=0;
int sp=0;
for(int i=0; i<n; i++){
cnt[a[i]]++; if(cnt[a[i]]>1){bruh=1;}
if(a[i]<=n){cn++; sp = i;}
for(int i=0; i<n; i++){
b[(2*n+a[sp]-sp+i-1)%n] = a[i];
}
}
if(bruh==1){return 0;}
if(cn==0){return 1;}
else {
int bru=0;
for(int i=0; i<n; i++){
if(b[i]<=n&&b[i]!=i+1){bru=1;}
}
return (1-bru);
}
}
int replacement(int n, int a[], int c[]){
return 0;
}
int countReplacement(int n, int a[]){
return 0;
}
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