#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()
int valid(int n, int in[]){
int mn=n+1,pos=-1;;
for(int i=0;i<n;i++){
if(in[i]<=n){
mn=min(mn,in[i]);
pos=i;
}
}
if(pos==-1) return 1;
for(int i=0;i<n;i++){
int p=(pos+i)%n;
if(in[p]<=n&&in[p]!=mn+i) return 0;
}
return 1;
}
int replacement(int n, int gon[], int rep[]){
return 0;
}
int countReplacement(int n, int in[]){
return 0;
}
Compilation message
/usr/bin/ld: /tmp/ccdl1GHa.o: in function `main':
grader.cpp:(.text.startup+0xb6): undefined reference to `valid'
/usr/bin/ld: grader.cpp:(.text.startup+0x108): undefined reference to `countReplacement'
/usr/bin/ld: grader.cpp:(.text.startup+0x132): undefined reference to `replacement'
collect2: error: ld returned 1 exit status
