#include <bits/stdc++.h>
#define pb push_back
#define fst first
#define snd second
#define fore(i,a,b) for(ll i=a,ioi=b;i<ioi;i++)
#define SZ(x) ((int)x.size())
#define ALL(x) x.begin(),x.end()
#define mset(a,v) memset((a),(v),sizeof(a))
#define imp(v) {for(auto fdgkj:v)cout<<fdgkj<<" ";cout<<"\n";}
using namespace std;
typedef long long ll;
typedef pair<ll,ll> ii;
void rotate(vector<ll>&a, ll x){
rotate(a.begin(),a.begin()+x,a.end());
}
int valid(int n, int A[]){
vector<ll>a(n);
fore(i,0,n)a[i]=A[i]-1;
ll done=0;
// imp(a);
fore(i,0,n)if(!done&&a[i]<n){
// cout<<i<<": "<<a[i]<<"\n";
rotate(a,(n-a[i])%n),done=1;
}
if(!done)return 1;
// imp(a);
ll flag=1;
fore(i,0,n){
ll fi=a[i]>=n||a[i]==i;
flag&=fi;
// if(!fi)cout<<i<<" "<<a[i]<<"\n";
}
return flag;
}
int replacement(int n, int A[], int res[]){
return 0;
/*vector<ll>a(n);
fore(i,0,n)a[i]=A[i]-1;
ll done=0;
fore(i,0,n)if(!done&&a[i]<n){
rotate(a,(n-a[i])%n),done=1;
}
if(!done)return 1;
ll flag=1;
fore(i,0,n){
ll fi=a[i]>=n||a[i]==i;
flag&=fi;
// if(!fi)cout<<i<<" "<<a[i]<<"\n";
}
return flag;*/
}
int countReplacement(int n, int inputSeq[]){
return 0;
}
Compilation message
/usr/bin/ld: /tmp/cclOlSyu.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
