criyle/codenet-compile-errors huggingface dataset:
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <set>
#include <queue>
#include <stack>
#include <tuple>
#include <cmath>
#include <iomanip>
#include <map>
#include <cstring> //memset(dp,0,sizeof(dp))
#include <functional>
#define ll long long
#define rep(i,n) for(int i=0;i<(n);i++)
#define repp(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define ppb pop_back()
#define ALL(a) (a).begin(),(a).end()
using namespace std;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}
typedef pair<int,int> P;
typedef pair<ll,ll> Pll;

int doubling(ll k,vector<int> &a){
    const int n=a.size();
    int logK=log2(k)+1;
    vector<vector<int> ret(logK,vector<int>(n));
    rep(i,n) ret[0][i]=a[i];
    rep(j,logK-1){
        rep(i,n){
            ret[j+1][i]=ret[j][ret[j][i]];
        }
    }
    int now=0;
    for(int j=0;k>0;j++){
        if(k&1)now=ret[j][now];
        k=k>>1;
    }
    return now+1;
}

signed main(){
    int n; cin >> n;
    ll k; cin >> k;
    vector<int> a(n);
    rep(i,n){
        cin >> a[i];
        a[i]--;
    }
    cout << doubling(a) << endl;
}


Compiler output:
a.cc: In function 'int doubling(long long int, std::vector<int>&)':
a.cc:31:47: error: template argument 1 is invalid
   31 |     vector<vector<int> ret(logK,vector<int>(n));
      |                                               ^
a.cc:31:47: error: template argument 2 is invalid
a.cc:32:14: error: 'ret' was not declared in this scope; did you mean 'rep'?
   32 |     rep(i,n) ret[0][i]=a[i];
      |              ^~~
      |              rep
a.cc:35:13: error: 'ret' was not declared in this scope; did you mean 'rep'?
   35 |             ret[j+1][i]=ret[j][ret[j][i]];
      |             ^~~
      |             rep
a.cc:40:20: error: 'ret' was not declared in this scope; did you mean 'rep'?
   40 |         if(k&1)now=ret[j][now];
      |                    ^~~
      |                    rep
a.cc: In function 'int main()':
a.cc:54:22: error: cannot convert 'std::vector<int>' to 'long long int'
   54 |     cout << doubling(a) << endl;
      |                      ^
      |                      |
      |                      std::vector<int>
a.cc:28:17: note:   initializing argument 1 of 'int doubling(long long int, std::vector<int>&)'
   28 | int doubling(ll k,vector<int> &a){
      |                 ^
Language: C++

#include <bits/stdc++.h>
#define ff { ios_base::sync_with_stdio(false);cin.tie(NULL);}
using namespace std;

typedef long long ll;
 ll  p=1e9+7; 
double pi=3.141592653589793238;
  

 int main() {
        ff;
        
         int n;ll k;
	scanf("%d%llu",&n,&k);
	for(int i=1;i<=n;i++) scanf("%d",&a[i]);
	int tmp=1;
	int tot=0;
	while(1){
		if(vis[tmp]) break;
		vis[tmp]=1;
		v.push_back(tmp);
		tmp=a[tmp];
	}
	int sz=v.size();
	for(tot=0;tot<sz;tot++) if(v[tot]==tmp) break;
	if(k<=tot){
		printf("%d\n",v[k]);
		return 0;
	}
	int rot=sz-tot;
	int rmd=(k-tot)%rot+tot;
	printf("%d\n",v[rmd]);
        
           
       
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:43: error: 'a' was not declared in this scope
   15 |         for(int i=1;i<=n;i++) scanf("%d",&a[i]);
      |                                           ^
a.cc:19:20: error: 'vis' was not declared in this scope
   19 |                 if(vis[tmp]) break;
      |                    ^~~
a.cc:20:17: error: 'vis' was not declared in this scope
   20 |                 vis[tmp]=1;
      |                 ^~~
a.cc:21:17: error: 'v' was not declared in this scope
   21 |                 v.push_back(tmp);
      |                 ^
a.cc:22:21: error: 'a' was not declared in this scope
   22 |                 tmp=a[tmp];
      |                     ^
a.cc:24:16: error: 'v' was not declared in this scope
   24 |         int sz=v.size();
      |                ^
Language: C++

#include <iostream>
#include <string.h>
#include <vector>
using namespace std;

const int NUM = 2 * 10e5 + 1;
// 存储
long long list[NUM];
// 标志访问
bool visit[NUM];
// 栈存储访问路径
vector<long long> vec;

int main()
{
    // test case
    long long n, k;
    scanf("%lld %lld", &n, &k);
    // 初始化
    memset(list, 0, sizeof(list));
    memset(visit, 0, sizeof(visit));
    // 输入
    for (long long i = 0; i < n; i++) {
        scanf("%lld", &list[i]);
    }
    // 初始化
    long long buffer = 1;
    // 计算
    for (int i = 0; i < n; i++) {
        // 标志访问
        visit[buffer] = 1;
        // 节点入栈
        vec.push_back(buffer);
        // 获取下一个节点
        buffer = list[buffer - 1];
        // 若形成环路
        if (visit[buffer] == 1) {
            break;
        }
    }
    // 在栈中找出环路开始位置
    auto it = find(vec.begin(), vec.end(), buffer);
    // 环路长度
    long long cycleLength = vec.end() - it;
    // 环路开始前的栈深度
    long long stackLength = it - vec.begin();
    // 计算从环路起点开始的位移
    long long posMark;
    if (k > stackLength) {
        // 若存在环路
        posMark = (k - stackLength) % cycleLength;
    } else {
        // 若不存在环路
        posMark = (k - stackLength);
    }
    // 输出
    printf("%lld\n", vec[stackLength + posMark]);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:42:19: error: no matching function for call to 'find(std::vector<long long int>::iterator, std::vector<long long int>::iterator, long long int&)'
   42 |     auto it = find(vec.begin(), vec.end(), buffer);
      |               ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/bits/locale_facets.h:48,
                 from /usr/include/c++/14/bits/basic_ios.h:37,
                 from /usr/include/c++/14/ios:46,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/streambuf_iterator.h:435:5: note: candidate: 'template<class _CharT2> typename __gnu_cxx::__enable_if<std::__is_char<_CharT2>::__value, std::istreambuf_iterator<_CharT> >::__type std::find(istreambuf_iterator<_CharT>, istreambuf_iterator<_CharT>, const _CharT2&)'
  435 |     find(istreambuf_iterator<_CharT> __first,
      |     ^~~~
/usr/include/c++/14/bits/streambuf_iterator.h:435:5: note:   template argument deduction/substitution failed:
a.cc:42:19: note:   '__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >' is not derived from 'std::istreambuf_iterator<_CharT>'
   42 |     auto it = find(vec.begin(), vec.end(), buffer);
      |               ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  string a;
  int i=k.length();
  int n,k;
  cin>>n;
  cin>>k;
  for(i=0;i<=n;i++){
    cin>>a[i];
  }
  while(i<=k){
    a[i] +=;
  }
}
      

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'k' was not declared in this scope
    5 |   int i=k.length();
      |         ^
a.cc:13:12: error: expected primary-expression before ';' token
   13 |     a[i] +=;
      |            ^
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);i++)
using namespace std;

int main()
{
    int N;
    long long  K;
    cin>>N>>K;
    vector<int>A(N);
   for(int i=0;i<N;i++)
   {
       cin>>A[i];
   }
   
  
    vector<int>s;
    vector<int>ord(N+1,-1);
    int v=-1;
    int c,l;
  
    while(ord[v]==-1)
    {
        ord[v]=s.size;
        s.push_back(v);
        v = A[v-1];
    }
    
    c = s.size - ord[v];
    l = ord[v];
  
  
  if(K<l) cout<<s[K]<<endl;
   
  else
  {
      K-=l;
      K%=c;
      cout<<s[l+K]<<endl;
  
  }
    
 
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:18: error: cannot convert 'std::vector<int>::size' from type 'std::vector<int>::size_type (std::vector<int>::)() const noexcept' {aka 'long unsigned int (std::vector<int>::)() const noexcept'} to type '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'}
   24 |         ord[v]=s.size;
      |                  ^~~~
a.cc:29:11: error: invalid use of member function 'std::vector<_Tp, _Alloc>::size_type std::vector<_Tp, _Alloc>::size() const [with _Tp = int; _Alloc = std::allocator<int>; size_type = long unsigned int]' (did you forget the '()' ?)
   29 |     c = s.size - ord[v];
      |         ~~^~~~
      |               ()
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);i++)
using namespace std;

int main()
{
    int N;
    long long  K;
    cin>>N>>K;
    vector<int>A(N);
   for(int i=0;i<N;i++)
   {
       cin>>A[i];
   }
   
  
    vector<int>s;
    vector<int>ord(n+1,-1);
    int v=-1;
    int c,l;
  
    while(ord[v]==-1)
    {
        ord[v]=s.size;
        s.push_back(v);
        v = A[v-1];
    }
    
    c = s.size - ord[v];
    l = ord[v];
  
  
  if(K<l) cout<<s[k]<<endl;
   
  else
  {
      K-=l;
      K%=c;
      cout<<s[l+K]<<endl;
  
  }
    
 
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:20: error: 'n' was not declared in this scope
   18 |     vector<int>ord(n+1,-1);
      |                    ^
a.cc:24:18: error: cannot convert 'std::vector<int>::size' from type 'std::vector<int>::size_type (std::vector<int>::)() const noexcept' {aka 'long unsigned int (std::vector<int>::)() const noexcept'} to type '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'}
   24 |         ord[v]=s.size;
      |                  ^~~~
a.cc:29:11: error: invalid use of member function 'std::vector<_Tp, _Alloc>::size_type std::vector<_Tp, _Alloc>::size() const [with _Tp = int; _Alloc = std::allocator<int>; size_type = long unsigned int]' (did you forget the '()' ?)
   29 |     c = s.size - ord[v];
      |         ~~^~~~
      |               ()
a.cc:33:19: error: 'k' was not declared in this scope
   33 |   if(K<l) cout<<s[k]<<endl;
      |                   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    double N,K;
    cin>>N>>K;
    long long A[N];
  
  for(int i=0;i<N;i++)
  {
      cin>>A[i];
  }

   int next =0;

  for(int k=0;k<K-1;k++)
  {
       next = A[next];
  }

    cout<<next<<endl;


return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:17: error: conversion from 'double' to 'long unsigned int' in a converted constant expression
    8 |     long long A[N];
      |                 ^
a.cc:8:17: error: could not convert 'N' from 'double' to 'long unsigned int'
    8 |     long long A[N];
      |                 ^
      |                 |
      |                 double
a.cc:8:17: error: size of array 'A' has non-integral type 'double'
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    double N,K;
    cin>>N>>K;
    double a[N];
  
  for(int i=0;i<N;i++)
  {
      cin>>a[i];
  }

   int next =0;

  for(int k=0;k<K-1;k++)
  {
       next = a[next];
  }

    cout<<next<<endl;


return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: conversion from 'double' to 'long unsigned int' in a converted constant expression
    8 |     double a[N];
      |              ^
a.cc:8:14: error: could not convert 'N' from 'double' to 'long unsigned int'
    8 |     double a[N];
      |              ^
      |              |
      |              double
a.cc:8:14: error: size of array 'a' has non-integral type 'double'
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    double N,K;
    cin>>N>>K;
  
   double A[N];
  
  for(int i=0;i<N;i++)
  {
      cin>>A[i];
  }

   int next =0;

  for(int k=0;k<K-1;k++)
  {
       next = A[next];
  }

cout<<next<<endl;


return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: conversion from 'double' to 'long unsigned int' in a converted constant expression
    9 |    double A[N];
      |             ^
a.cc:9:13: error: could not convert 'N' from 'double' to 'long unsigned int'
    9 |    double A[N];
      |             ^
      |             |
      |             double
a.cc:9:13: error: size of array 'A' has non-integral type 'double'
Language: C++

#include <bits/stdc++.h>
#include <iostream>
#include<fstream>
#include <map> 
using namespace std;

typedef long long ll;




int main() {
    int N;
    long long K;
    cin >> N >> K;
    vector<int> A(200001);
    for(int i=1;i<N+1;i++){
        fcn >> A[i];
    }
    
    map<int, int> mp;
    
    mp[1] = 0;
    int town = 1;
    int loop;
    int i = 1;
    while(1){
        if(A[town] == 1 || mp[A[town]] != 0 || i == K) {
            loop = i - mp[A[town]];
            K = K - mp[A[town]];
            town = A[town];
            break;
        }else{
            mp[A[town]] = i;
            town = A[town];
        }
        i++;
    }
    K = K % loop;
    for(int i=0;i<K;i++){
        town = A[town];
    }
    cout << town << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:9: error: 'fcn' was not declared in this scope
   18 |         fcn >> A[i];
      |         ^~~
Language: C++

#include<bits/stdc++.h>
#define pb push_back
#define pf push_front
#define ppb pop_back
#define mp make_pair
#define re(i , n) for(Long i = 0; i < (Long)n ; i++)
#define rer(i, a, b) for (Long i = a, to = b; i < to; i++)
#define rll(x) Long x;cin>>x;
#define rll2(x,y) Long x,y;cin>>x>>y;
#define rll3(x,y,z) Long x,y,z;cin>>x>>y>>z;
#define rs(s) string s;cin>>s;
using namespace std;
 
typedef long long Long;
typedef pair<Long,Long> pll;
typedef pair<Long,pll> tll;
 
typedef vector<Long> vll;
typedef vector<pll> vpll;
typedef vector<tll> vtll;
typedef vector<string> vs;
typedef set<Long> si;
 
 
const long double PI = acos(-1);
const Long MX=2e5 + 1;
const Long MOD=1000000007;
const Long MX2=9223372036854775806;
Long present[200000+5];
 
int main(){
	rll2(n,k);
	vll v(n),a;
	re(i,n){
		cin>>v[i];
	}
 
	Long i=1;
	present[1]=1;
	a.pb(1);
	map<Long,Long> m;
	m.insert(mp(1,1));
	
	Long l;
	while(present[v[a[a.size()-1]-1]]==0){
		i++;
		present[v[a[a.size()-1]-1]]=1;
		m.insert(mp(v[a[a.size()-1]-1],i));
		a.pb(v[a[a.size()-1]-1]);
		
		if(present[v[a[a.size()-1]-1]]==1){
		    l=v[a[a.size()-1]-1];
		}
	}
	/*
	re(j,a.size()){
		cout<<a[j]<<" "<<m[a[j]]<<"\n";
	}
	*/
	Long r;
	l=m[l]-1;
	r=l;
	l=i-l;

	if(k<a.size()) cout<<ans[k]<<endl;
	else cout<<ans[r  +((k-r)%(l))]<<endl;

	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:65:30: error: 'ans' was not declared in this scope; did you mean 'abs'?
   65 |         if(k<a.size()) cout<<ans[k]<<endl;
      |                              ^~~
      |                              abs
a.cc:66:20: error: 'ans' was not declared in this scope; did you mean 'abs'?
   66 |         else cout<<ans[r  +((k-r)%(l))]<<endl;
      |                    ^~~
      |                    abs
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int N;
  ll K;
  cin >> N >> K;
  vector<int> v(N+1);
  for(int i=1;i<=N;i++){
    int A;
    cin >> A;
    v.at(i)=A;
  }
  int cycle=0;
  vector<int> ans;
  int x=1;
  ans.push_back(1);
  vector<int> num(N+1,-1);
  num.at(1)=0;
  int s;
  for(int i=1;;i++){
    int y=v.at(x);
    if(num.at(y)!=-1){
      cycle=i-num.at(y);
      s=num.at(y);
      break;
    }
    num.at(y)=i;
    ans.push_back(y);
    x=y;
  }
  if(s>=K){
    cout << ans.at(K) << endl;
  }else{
    cout << ans.at((K-s)%cycle+s) << endl;
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'll' was not declared in this scope
    6 |   ll K;
      |   ^~
a.cc:7:15: error: 'K' was not declared in this scope
    7 |   cin >> N >> K;
      |               ^
Language: Java

package codeplay;


import java.util.Arrays;
import java.util.Scanner;
import java.util.ArrayList;
import java.util.List;




public class Teleporter {
    public static void main(String[] args){


        //初期設定
        Scanner scan = new Scanner(System.in);
        ArrayList<Integer> X = new ArrayList<Integer>();
        String x = scan.next();
        String[] sx = x.split(" +");
        int numm = Integer.parseInt(x);
        int p=0;
        do{
        X.add(numm);
        p = p + 1;
        }
        while(p <2);

        int N = X.get(0);
        int K = X.get(1);
      


        Scanner scan2 = new Scanner(System.in);

        ArrayList<Integer> A = new ArrayList<Integer>();
        int q = 0;
        do {
            String input = scan2.next();
            String[] sa = input.split(" +");
            int num = Integer.parseInt(input);


                A.add(num);
                q = q + 1;
            }
            while (q < N);
            System.out.println(A);




        //計算
        int j = 1;
        for (int cnt = 1; cnt <= K; cnt++) {

            j = A.get(j+1);
            System.out.println(j);
            System.out.println("K=:"+cnt);
        }

        System.out.println(j);

    }

}



Compiler output:
Main.java:12: error: class Teleporter is public, should be declared in a file named Teleporter.java
public class Teleporter {
       ^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
	int64_t N, K;
	cin >> N >> K;
	int64_t a;
	vector<int> A(N);
	for(int i=0;i<N;i++){
		cin >> a;
		A.at(i) = a-1;
	}
	
	vector<int64_t> Visits(N+1);
	for(int i=0;i<N;i++){
		Visits.at(i+1) = A.at(Visits.at(i));
	}

	bool flag = false;
	for(int now=1;now<=N;now++){
		for(int old=0;old<now;old++){
			if(Visits.at(now) == Visits.at(old)){
				int64_t roopstartindex = old;
				int64_t roopendindex = now - 1;
				flag = true;
				break;
			}
		}
		if(flag) break;
	}
	int64_t roopsize = roopendindex - roopstartindex + 1;
	int64_t goal = (K-roopstartindex)%roopsize + roopstartindex;
	cout << Visits.at(goal) + 1 << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:28: error: 'roopendindex' was not declared in this scope
   31 |         int64_t roopsize = roopendindex - roopstartindex + 1;
      |                            ^~~~~~~~~~~~
a.cc:31:43: error: 'roopstartindex' was not declared in this scope
   31 |         int64_t roopsize = roopendindex - roopstartindex + 1;
      |                                           ^~~~~~~~~~~~~~
Language: Java

package codeplay;


import java.util.Arrays;
import java.util.Scanner;
import java.util.ArrayList;
import java.util.List;




public class Teleporter<output> {
    public static void main(String[] args){


        //初期設定
        Scanner scan = new Scanner(System.in);
       // System.out.println("Nを入力してください");
        int N = scan.nextInt();
      // System.out.println("kを入力してください");
        long K = scan.nextLong();
       // System.out.println("Aを入力してください");

        int i = 1;
        ArrayList<Integer> A = new ArrayList<Integer>();
        do {
            String input = scan.next();
            String[] sa = input.split(" +");
            int num = Integer.parseInt(input);
            A.add(num);
            //System.out.println(A);

            i = i + 1;
        }
        while (i <= N);


        /*初期設定
        Scanner scan = new Scanner(System.in);
        int i = 1;
        ArrayList<Integer> X = new ArrayList<Integer>();
        do {
            String x = scan.next();
            String[] sx = x.split(" +");
            int num = Integer.parseInt(x);
            X.add(num);
           // int N = X.get(0);
            //int K = X.get(1);
            System.out.print(X.get(0));
            i = i + 1;
        }
        while(i <= 2);

         */




        //計算
        int j = 1;
        for (int cnt = 1; cnt <= K; cnt++) {

            j = A.get(j-1);
           // System.out.println(j);
           // System.out.println("K=:"+cnt);
        }

        System.out.println(j);




    }




}



Compiler output:
Main.java:12: error: class Teleporter is public, should be declared in a file named Teleporter.java
public class Teleporter<output> {
       ^
1 error
Language: C

#include <iostream>
using namespace std;

long long n,m,p,k=1,t,a[200001],a1[200001];
int main() {
  cin >> n >> m;
  for(int i=1;i<=n;++i) {
    cin >> a[i];
  }
  while(!a1[k]) {
    a1[k]=t+1;
    if(t==m){
      cout << k;
      return 0;
    }
    k=a[k];
    t++;
  }
  p=(m-a1[k]+1)%(t+1-a1[k]);
  for(int i=0;i<p;++i)
    k=a[k];
  cout << k;

  return 0;
}

Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#include "iostream"
#include "climits"
#include "list"
#include "queue"
#include "stack"
#include "set"
#include "functional"
#include "algorithm"
#include "string"
#include "map"
#include "unordered_map"
#include "unordered_set"
#include "iomanip"
#include "cmath"
#include "random"
#include "bitset"
#include "cstdio"
#include "numeric"
#include "cassert"
#include "ctime"

using namespace std;
using ll = long long;
#define rep(i,n) for(int i = 0; i < n; i++)
const int INF = 1001001001;

int main() {
	int n;
	cin >> n;
	ll k;
	cin >> k;
	vector<int> a(n);
	rep(i, n) cin >> a[i];
	set<int> st;
	int now = 1;
	vector<int> data(1, 1);
	//一度来たことのある町に来たらループを停止する。
	//ループに含まれる頂点の数を数えたい。
	while (!st.count(now)) {
		st.insert(now);
		now = a[now - 1];
		data.push_back(now);
	}
	//グラフ内のloopの大きさloopSize
	int loopSize = data.size() - 1;
	//loopに入る前の移動回数head
	int head = 0;
	for (int i = 0; data[i] != data[data.size() - 1]; i++) {
		loopSize--;
		head++;
	}
	if (k >= head) {
		k -= head;
		int remain = k % loopSize;
		cout << data[head + remain] << endl;
	}
	else cout << data[k - 1];


Compiler output:
a.cc: In function 'int main()':
a.cc:57:34: error: expected '}' at end of input
   57 |         else cout << data[k - 1];
      |                                  ^
a.cc:27:12: note: to match this '{'
   27 | int main() {
      |            ^
Language: C++


#include <iostream>
#include <math.h>
#include <vector>
#include <algorithm>
#define dcout //cout
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using P = pair<int,int>;
typedef long long ll;


const int nmax=200010; 
int A[nmax];
int B[nmax];
int first[nmax];

int N;
ll K;
int T;
int loop_enter;

int get_T(){
    int pos=0;
    first[0] = 0; 
    rep(i,N){
        B[i] = pos;
        dcout  << "B[i] "<< i << "," << B[i] << endl;
        pos = A[pos];
        if(first[pos] >= 0){
            loop_enter = first[pos]; 
            T=i+1 - loop_enter;
            return T;
        }
        first[pos]=i+1;
    }
    cout << "error" << endl;
    exit(-1);

}
void solve(){
    T = get_T();
    if (K < loop_enter + T){
        cout << B[K] << endl;4defios
        exit(0);
    } else {
        ll remain;
        remain =(int)( (K - loop_enter) % T);
        // cout << loop_enter <<"," << remain << endl;
        cout << B[loop_enter + remain] +1 << endl; 
    }

}
    

int main() {
    int i,j; 
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> N >> K; 
    // cout << N <<"," << K << endl;
    rep(i,N){
        int x;
        cin >> x;
        A[i]=x -1 ; // start from 0
        first[i] = -1;
        // cout << A[i] << endl;
    } 
    solve();
}




Compiler output:
a.cc: In function 'int get_T()':
a.cc:28:16: error: expected primary-expression before '<<' token
   28 |         dcout  << "B[i] "<< i << "," << B[i] << endl;
      |                ^~
a.cc: In function 'void solve()':
a.cc:44:30: error: unable to find numeric literal operator 'operator""defios'
   44 |         cout << B[K] << endl;4defios
      |                              ^~~~~~~
Language: C

#pragma GCC optimize("Ofast")
  
#include <iostream>
#include <algorithm>
#include <vector>
#include <cstring>
#include <string>
#include <map>
#include <unordered_map>
#include <queue>
#include <stack>
#include <deque>
#include <set>
#include <unordered_set>
#include <list>
#include <tuple>
#include <iomanip>
#include <climits>
#include <cstdlib>
#include <cassert>
#include <numeric>
#include <math.h>
#include <bitset>
#include <random>
#include <regex>

using namespace std;
  
#define rep(i,n) for(int i=0;i<(n);++i)
#define reps(i,f,n) for(int i=f;i<=(n);++i)
#define all(x) (x).begin(),(x).end()
#define Fixed fixed << setprecision(14)
#define int long long
using pii = pair<int,int>;
constexpr int INF  = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr int mod1 = 1e9+7; 
constexpr int mod2 = 998244353;
constexpr int dy[] = {0,1,0,-1,1,-1,-1,1};
constexpr int dx[] = {1,0,-1,0,1,1,-1,-1};
 
template <class A, class B> inline bool chmax(A &a, const B &b) { return b > a && (a = b, true); }
template <class A, class B> inline bool chmin(A &a, const B &b) { return b < a && (a = b, true); }

template <class A, class B> inline A updiv(const A a,const B b){ return (a + b - 1) / b; }
template <class A, class B> inline A gcd(const A a,const B b){ return b ? gcd(b,a % b) : a; }
template <class A, class B> inline A lcm(const A a,const B b){ return a / gcd(a,b) * b; }

template <class T> using min_heap = priority_queue<T,vector<T>,greater<T> >;
template <class T> using max_heap = priority_queue<T>;
template <class A,class B> using umap = unordered_map<A,B>;


signed main(void){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

    int n, k;
    cin >> n >> k;

    vector<int> a(n+1);
    vector<vector<int> > table(64, vector<int>(n+1, -1));

    reps(i, 1, n){
        cin >> a[i];
        table[0][i] = a[i];
    }

    rep(j, 63){
        reps(i, 1, n){
            if(table[j][i] == -1){
                table[j+1][i] = -1;
            }else{
                table[j+1][i] = table[j][table[j][i]];
            }
        }
    } 

    int res = 1;

    for(int i = 63; i >= 0; --i){
        if(k & 1ll << i){
            res = table[i][res];
        }
    }

    return 0;
}

Compiler output:
main.c:3:10: fatal error: iostream: No such file or directory
    3 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
using namespace std;
int main()
{
 long long int n,k,a[1005];
  cin>>n>>k;
  for(int i=0;i<n;i++)
  {
    cin>>a[i];
  }
  sort(a,a+n);
    cout << a[0];
}

    
      

Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   11 |   sort(a,a+n);
      |   ^~~~
      |   short
Language: Java

import java.util.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        // 入力
        int n = sc.nextInt();
        long k = sc.nextLong();

        long[] a = new long[n+1];
        for (int i = 1; i <= n; i++) {
            a[i] = sc.nextInt();
        }

        long zan = k;
        // 1 6 2 5 3 2 5 3 [2]...
        long[] check = new long[n+1];
        int t = 1;
        for (long j = 1; j <= k; j++) {
            if (check[t] == 2) {
                // ループし始めている
                break;
            }
            check[t]++;
            t = a[t];
            zan--;
        }

        // 何回移動すれば同じ場所に戻るか
        long loopTerms = 0;
        for (int i = 1; i <= n; i++) {
            if (check[i] == 2) {
                loopTerms++;
            }
        }

        long k2 = zan % loopTerms;
        for (long j = 1; j <= k2; j++) {
            t = a[t];
        }

        // 出力
        System.out.println(t);
    }
}


Compiler output:
Main.java:25: error: incompatible types: possible lossy conversion from long to int
            t = a[t];
                 ^
Main.java:39: error: incompatible types: possible lossy conversion from long to int
            t = a[t];
                 ^
2 errors
Language: Java

import java.util.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        // 入力
        int n = sc.nextInt();
        long k = sc.nextLong();

        long[] a = new long[n+1];
        for (int i = 1; i <= n; i++) {
            a[i] = sc.nextInt();
        }

        long zan = k;
        // 1 6 2 5 3 2 5 3 [2]...
        long[] check = new long[n+1];
        long t = 1;
        for (long j = 1; j <= k; j++) {
            if (check[t] == 2) {
                // ループし始めている
                break;
            }
            check[t]++;
            t = a[t];
            zan--;
        }

        // 何回移動すれば同じ場所に戻るか
        long loopTerms = 0;
        for (int i = 1; i <= n; i++) {
            if (check[i] == 2) {
                loopTerms++;
            }
        }

        long k2 = zan % loopTerms;
        for (long j = 1; j <= k2; j++) {
            t = a[t];
        }

        // 出力
        System.out.println(t);
    }
}


Compiler output:
Main.java:20: error: incompatible types: possible lossy conversion from long to int
            if (check[t] == 2) {
                      ^
Main.java:24: error: incompatible types: possible lossy conversion from long to int
            check[t]++;
                  ^
Main.java:25: error: incompatible types: possible lossy conversion from long to int
            t = a[t];
                  ^
Main.java:39: error: incompatible types: possible lossy conversion from long to int
            t = a[t];
                  ^
4 errors
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;

int main() {
  int n; ll k;
  cin >> n >> k;
  vector<int> a(n);
  for (int i=0;i<n;i++){
      cin >> a.at(i);
  }

  vector<int> s;
  vector<int> ord(n+1,-1);
  int c = 1, 
  int l = 0;
  {
    int v = 1;
    while (ord[v] == -1) {
      ord[v] = s.size();
      s.push_back(v);
      v = a[v-1];
    }
    c = s.size() - ord[v];
    l = ord[v];
  }

  if (k < l) cout << s[k] << endl;
  else {
    k -= l;
    k %= c;
    cout << s[l+k] << endl;
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:3: error: expected unqualified-id before 'int'
   18 |   int l = 0;
      |   ^~~
a.cc:27:5: error: 'l' was not declared in this scope
   27 |     l = ord[v];
      |     ^
a.cc:30:11: error: 'l' was not declared in this scope
   30 |   if (k < l) cout << s[k] << endl;
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ALL(v) (v).begin(),(v).end()
#define REP(i,p,n) for(int i=p;i<(int)(n);++i)
#define rep(i,n) REP(i,0,n)
#define SZ(x) ((int)(x).size())
#define debug(x) cerr << #x << ": " << x << '\n'
const char newl = '\n';
typedef long long int Int;
typedef pair<int,int> P;
using ll = long long;
using VI = vector<int>;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
const long long INF = 1LL<<60;

const int D = 60;
const int MAX_N = 200005;

int to[D][MAX_N];
int main(){
    int n,Int k;
    cin >> n >> k;
    vector<int> a(n);
    rep(i,n){
        cin >> to[0][i];
        to[0][i]--;
    }
    rep(i,D-1){
        rep(j,n){
            to[i+1][j] = to[i][to[i][j]];
        }
    }
    int v = 0;
    for(int i=D-1;i>=0;--i){
        Int l = (Int)1<<i;
        if(l<=k){
            v = to[i][v];
            k-=l;
        }
    }
    cout << v+1 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:15: error: expected initializer before 'k'
   22 |     int n,Int k;
      |               ^
a.cc:23:17: error: 'k' was not declared in this scope
   23 |     cin >> n >> k;
      |                 ^
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i<(n); ++i)
using namespace std;
typedef long long ll;
int main() {
  ll n,k;
  cin >> n >> k;
  vector<int>a(n);
  vector<int>cnt(n,0);
  rep(i,n) {
    cin >> a[i];
    }
  int ans=1;
  ll p=k%n;
  if(k<=n) {
    rep(i,k) {
      ans=a[ans-1];}
  }
  int j=0;
  else {
    rep(i,k) {
      j=i;
      if(i>n-1) {
      j=0;
      ans=a[ans-1];
      cnt[i]++;
      if(cnt[i]>1) break;
      }
    }
  }
    rep(i,p) {
      ans=a[ans-1];}
    cout << ans << endl;
    return 0;
  }
      
      
    
    
    
    
  


Compiler output:
a.cc: In function 'int main()':
a.cc:20:3: error: 'else' without a previous 'if'
   20 |   else {
      |   ^~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i<(n); ++i)
using namespace std;
typedef long long ll;
int main() {
  ll n,k;
  cin >> n >> k;
  vector<int>a(n);
  vector<int>cnt(n,0);
  rep(i,n) {
    cin >> a[i];
    }
  int ans=1;
  ll p=k%n;
  if(k<=n) {
    rep(i,k) {
      ans=a[ans-1];}
  }
  else {
    rep(i,k) {
      int j=i;
      if(i>n-1) {
      j=0;
      ans=a[ans-1];
      cnt[i]++;
      if(cnt[i]>1) break;
      }
    }
    rep(i,p) {
      ans=a[ans-1];}
    cout << ans << endl;
    return 0;
  }
      
      
    
    
    
    
  


Compiler output:
a.cc: In function 'int main()':
a.cc:33:4: error: expected '}' at end of input
   33 |   }
      |    ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i<(n); ++i)
using namespace std;
typedef long long ll;
int main() {
  ll n,k;
  cn >> n >> k;
  vector<int>a(n);
  vector<int>cnt(n,0);
  rep(i,n) {
    cin >> a[i];
    }
  int ans=1;
  ll p=k%n;
  if(k<=n) {
    rep(i,k) {
      ans=a[ans-1];}
  }
  else {
    rep(i,k) {
      int j=i;
      if(i>n-1) {
      j=0;
      ans=a[ans-1];
      cnt[i]++;
      if(cnt[i]>1) break;
      }
    }
    rep(i,p) {
      ans=a[ans-1];}
    cout << ans << endl;
    return 0;
  }
      
      
    
    
    
    
  

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'cn' was not declared in this scope; did you mean 'n'?
    7 |   cn >> n >> k;
      |   ^~
      |   n
a.cc:33:4: error: expected '}' at end of input
   33 |   }
      |    ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  long long n, k;
  cin >> n >> k;
  int a[200010];
  int flag[200010];
  for(int i = 1; i <= n; i++) cin >> d[i];
  
  int pos = 1, cnt = 0;
  while(k) {
    pos = a[pos];
    k--;
    cnt++;
    if(flag[pos]) k %= (cnt-flag[pos]);
    else flag[pos] = cnt;
  }
  cout << pos << "\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:38: error: 'd' was not declared in this scope
    9 |   for(int i = 1; i <= n; i++) cin >> d[i];
      |                                      ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;

#define mem(dp,a)       memset(dp,a,sizeof dp)
#define ninja           ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define pb(x)           push_back(x)
#define all(c)          c.begin(), c.end()
#define int             long long
#define ff              first
#define ss              second
#define nl              '\n'

set<int> adj[200005];
bool vis[200005];
vector<int> path;

bool dfs(int s, int p){
	vis[s]=1;
	path.pb(s);
	for(auto i:adj[s]){
		if(!vis[i]){
			if(dfs(i,s))
			return true;
		}
		if(vis[i] and i!=p){
                path.pb(i);
			return true;
		}
	}
	return false;
}
int32_t main()
{
	ninja
	int n,k; cin>>n>>k;
	int x;
	for(int i=1;i<=n;i++){
		cin>>x;
		adj[i].insert(x);
	}
	mem(vis,false);
	bool cycle=dfs(1,-1);
	  //   for(auto i:path)
   //    cout<<i<<" ";
   // cout<<endl;

	int i=0,j=path.size()-1;
	while(i<j){
		if(path[i]==path[j]){
			break;
		}
		i++;
	}
	int temp =k;
	 k = k- i;
	 if(k<0){
	 	//if(i+k<path.size()){
	 	cout<<path[i+k]<<" ";return 0;//}
	 else{
	 	cout<<path[path.size()-1]; return 0;
	 }
	 }
	// cout<<j<<' '<<i<<nl;
	int final_dest = (k)%(j-i) + i;
	// if(i>0)
 //    path.erase(path.begin(),path.begin()+i-1);

    //cout<<final_dest<<endl;
	cout<< path[final_dest];
}



Compiler output:
a.cc: In function 'int32_t main()':
a.cc:60:10: error: expected '}' before 'else'
   60 |          else{
      |          ^~~~
a.cc:57:17: note: to match this '{'
   57 |          if(k<0){
      |                 ^
a.cc: At global scope:
a.cc:65:27: error: 'k' was not declared in this scope
   65 |         int final_dest = (k)%(j-i) + i;
      |                           ^
a.cc:65:31: error: 'j' was not declared in this scope; did you mean 'jn'?
   65 |         int final_dest = (k)%(j-i) + i;
      |                               ^
      |                               jn
a.cc:65:33: error: 'i' was not declared in this scope
   65 |         int final_dest = (k)%(j-i) + i;
      |                                 ^
a.cc:65:38: error: 'i' was not declared in this scope
   65 |         int final_dest = (k)%(j-i) + i;
      |                                      ^
a.cc:70:9: error: 'cout' does not name a type
   70 |         cout<< path[final_dest];
      |         ^~~~
a.cc:71:1: error: expected declaration before '}' token
   71 | }
      | ^
Language: C++

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
#define   sz(s)         s.size()
#define   ll            long long int
#define   ull           unsigned ll
#define   ld            long double
#define   print(v)      for(ll i=0;i<v.size();i++)cout<<v[i]<<" "
#define   printpair(v)  for(ll i=0;i<v.size();i++)cout<<v[i].first<<" "<<v[i].second<<"\n"
#define   bmd           1000000007
#define   bmd1          998244353
#define   umll          unordered_map<ll,ll>
#define   mll           map<ll,ll>
#define   mcl           map<char,ll>
#define   pll           pair<ll,ll>
#define   F             first
#define   S             second
#define   setp(x)       setprecision(x)
#define   pb            push_back
#define   all(v)        v.begin(),v.end()
#define   tr(a)         for(auto it=a.begin();it!=a.end();it++)
#define   trr(a)        for(auto it1=a.begin();it1!=a.end();it1++)
#define   vll           vector<long long int>
#define   sorty(v)      sort(v.begin(),v.end())
#define   rsort(v)      sort(v.rbegin(),v.rend())
#define   PI            3.1415926535897932384626
#define   db()          cout<<"\n"<<"here"<<"\n"
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;


//---------------------------------------------------------------------------
const int MOD = bmd;
const int N=2e5+100;
inline  ll sqr(ll x){return x*x;}
inline  void normal(ll &a) { a = (a+MOD)%MOD; }
inline  ll modMul(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); return (a*b)%MOD; }
inline  ll modAdd(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); return (a+b)%MOD; }
inline  ll modSub(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); a -= b; normal(a); return a; }
inline  ll modPow(ll b, ll p) { ll r = 1;b=b%MOD; while(p) { if(p&1) r = modMul(r, b); b = modMul(b, b); p >>= 1; } return r; }
inline  ll modInv(ll a) { return modPow(a, MOD-2); }
inline  ll modDiv(ll a,ll b) { return modMul(a, modInv(b)); }
//---------------------------------------------------------------------------
void solve()
{
    ll n,k;
    cin>>n>>k;
    k++;
    ll a[n+2];
    for(ll i=1; i<=n; i++)
        cin>>a[i];
    bool vis[N]={false};
    vll v;
    ll c=1;
    while(vis[c]==false)
    {
        v.pb(c);
        vis[c]=1;
        c=a[c];
    }
    ll szv = sz(v);
    if(k<=szv)){
        cout << v[k-1] << "\n";
        return;
    }
    memset(vis,false,sizeof(vis));
    vll vr;
    while(vis[c]==false){
        vr.pb(c);
        vis[c]=1;
        c=a[c];
    }

    k-=sz(v);
    ll szr = sz(vr);
    if(k>szr){
        k= k%(sz(vr));
        //k++;
    }
    //cout << k <<"\n";
    cout <<vr[k-1] <<"\n";
    return;

}

int main()
{
    //ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);//first give all input then gives output

    ll t=1;
    //cin>>t;
    while(t--){
        solve();
    }
    return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:63:15: error: expected primary-expression before ')' token
   63 |     if(k<=szv)){
      |               ^
Language: C++

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
#define   sz(s)         s.size()
#define   ll            long long int
#define   ull           unsigned ll
#define   ld            long double
#define   print(v)      for(ll i=0;i<v.size();i++)cout<<v[i]<<" "
#define   printpair(v)  for(ll i=0;i<v.size();i++)cout<<v[i].first<<" "<<v[i].second<<"\n"
#define   bmd           1000000007
#define   bmd1          998244353
#define   umll          unordered_map<ll,ll>
#define   mll           map<ll,ll>
#define   mcl           map<char,ll>
#define   pll           pair<ll,ll>
#define   F             first
#define   S             second
#define   setp(x)       setprecision(x)
#define   pb            push_back
#define   all(v)        v.begin(),v.end()
#define   tr(a)         for(auto it=a.begin();it!=a.end();it++)
#define   trr(a)        for(auto it1=a.begin();it1!=a.end();it1++)
#define   vll           vector<long long int>
#define   sorty(v)      sort(v.begin(),v.end())
#define   rsort(v)      sort(v.rbegin(),v.rend())
#define   PI            3.1415926535897932384626
#define   db()          cout<<"\n"<<"here"<<"\n"
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;


//---------------------------------------------------------------------------
const int MOD = bmd;
const int N=2e5+100;
inline  ll sqr(ll x){return x*x;}
inline  void normal(ll &a) { a = (a+MOD)%MOD; }
inline  ll modMul(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); return (a*b)%MOD; }
inline  ll modAdd(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); return (a+b)%MOD; }
inline  ll modSub(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); a -= b; normal(a); return a; }
inline  ll modPow(ll b, ll p) { ll r = 1;b=b%MOD; while(p) { if(p&1) r = modMul(r, b); b = modMul(b, b); p >>= 1; } return r; }
inline  ll modInv(ll a) { return modPow(a, MOD-2); }
inline  ll modDiv(ll a,ll b) { return modMul(a, modInv(b)); }
//---------------------------------------------------------------------------
void solve()
{
    ll n,k;
    cin>>n>>k;
    k++;
    ll a[n+2];
    for(ll i=1; i<=n; i++)
        cin>>a[i];
    bool vis[N]={false};
    vll v;
    ll c=1;
    while(vis[c]==false)
    {
        v.pb(c);
        vis[c]=1;
        c=a[c];
    }

    if(k<=v.size())){
        cout << v[k-1] << "\n";
        return;
    }
    memset(vis,false,sizeof(vis));
    vll vr;
    while(vis[c]==false){
        vr.pb(c);
        vis[c]=1;
        c=a[c];
    }

    k-=sz(v);
    if(k>vr.size()){
        k= k%(sz(vr));
        //k++;
    }
    //cout << k <<"\n";
    cout <<vr[k-1] <<"\n";
    return;

}

int main()
{
    //ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);//first give all input then gives output

    ll t=1;
    //cin>>t;
    while(t--){
        solve();
    }
    return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:63:20: error: expected primary-expression before ')' token
   63 |     if(k<=v.size())){
      |                    ^
Language: C++

#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include < iostream>
#include <vector>

using namespace std;

int main() {
  int N;
  long K;
  cin >> N >> K;

  int A[N];
  for (int i = 0; i < N; i++) {
    cin >> A[i];
  }

  int presentPoint = 1;
  int nextPoint = -1;
  vector<int> loop = {1};
  int loopstart = -1;
  int loopsize = -1;
  for (int i = 0; i < K; i++) {
    nextPoint = A[presentPoint - 1];
    for (int j = 0; j < loop.size() - 1; j++) {
      if (loop[j] == nextPoint) {
        loopstart = j;
        loopsize = i - j + 1;
        break;
      }
    }
    presentPoint = A[presentPoint - 1];
    loop.emplace_back(presentPoint);
    if (loopstart != -1 && loopsize != -1) {
      break;
    }
  }
  int remaincount = (K - loopstart) % loopsize;
  if (remaincount != 0) {
    presentPoint = loop[loopstart + remaincount];
  }

  cout << presentPoint << endl;
  return 0;
}

Compiler output:
a.cc:4:10: fatal error:  iostream: No such file or directory
    4 | #include < iostream>
      |          ^~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>

using namespace std;

int n, i, cntOne, cntTwo, cycle;
int fr[200001], a[200001];
long long int k;

int main() {
    cin >> n >> k;
    for (int i = 1; i <= n; i++)
        cin >> a[i];
        
    i = 1;
    while (i) {
        fr[i]++;
        if (fr[i] == 1)
            cntOne++;
        if (fr[i] == 3)
            break;
        if (fr[i] == 2) {
            cntTwo++;
            if (!posCycle)
                posCycle = i;
        }
        i = a[i];
    }
    cntOne -= cntTwo;
    i = 1;
    if (k > cntOne) {
        cycle = (k - cntOne) % cntTwo;
        while (cntOne--)
            i = a[i];
    }
    else
        cycle = k;

    while (cycle--) {
        i = a[i];
    }

    cout << i << "\n";

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:18: error: 'posCycle' was not declared in this scope
   23 |             if (!posCycle)
      |                  ^~~~~~~~
Language: C++

#include <iostream>

using namespace std;

int n, i, cntOne, cntTwo, cycle;
int fr[200001], a[200001];
long long int k;

int main() {
    cin >> n >> k;
    for (int i = 1; i <= n; i++)
        cin >> a[i];
        
    i = 1;
    while (i) {
        fr[i]++;
        if (fr[i] == 1)
            cntOne++;
        if (fr[i] == 3)
            break;
        if (fr[i] == 2) {
            cntTwo++;
            if (!posCycle)
                posCycle = i;
        }
        i = a[i];
    }
    cntOne -= cntTwo;
    if (k > cntOne) {
        cycle = (k - cntOne) % cntTwo;
        while (cntOne--)
            j = a[j];
    }
    else
        cycle = k;

    while (cycle--) {
        j = a[j];
    }

    cout << j << "\n";

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:18: error: 'posCycle' was not declared in this scope
   23 |             if (!posCycle)
      |                  ^~~~~~~~
a.cc:32:13: error: 'j' was not declared in this scope
   32 |             j = a[j];
      |             ^
a.cc:38:9: error: 'j' was not declared in this scope
   38 |         j = a[j];
      |         ^
a.cc:41:13: error: 'j' was not declared in this scope
   41 |     cout << j << "\n";
      |             ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
bool ok[10000009];
long long n,k,i,l,ans,a[10000009];
vector<long long> v;
int main
{
	cin>>n>>k;
	for(k=1;k<=n;k++)
	{
		cin>>a[k];
	}
	for(k=1;k<=n;k++)
	{
		l++;
		ok[k]=true;
		v.push_back(k);
		if(ok[a[k]]==true) break;
	}
	l=k%l;
	cout<<v[k];
}

Compiler output:
a.cc:6:5: error: cannot declare '::main' to be a global variable
    6 | int main
      |     ^~~~
a.cc:8:18: error: expected '}' before ';' token
    8 |         cin>>n>>k;
      |                  ^
a.cc:7:1: note: to match this '{'
    7 | {
      | ^
a.cc:8:15: error: invalid user-defined conversion from 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} to 'int' [-fpermissive]
    8 |         cin>>n>>k;
      |         ~~~~~~^~~
In file included from /usr/include/c++/14/ios:46,
                 from /usr/include/c++/14/istream:40,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_ios.h:121:16: note: candidate is: 'std::basic_ios<_CharT, _Traits>::operator bool() const [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  121 |       explicit operator bool() const
      |                ^~~~~~~~
/usr/include/c++/14/bits/basic_ios.h:121:16: note:   return type 'bool' of explicit conversion function cannot be converted to 'int' with a qualification conversion
a.cc:9:9: error: expected unqualified-id before 'for'
    9 |         for(k=1;k<=n;k++)
      |         ^~~
a.cc:9:17: error: 'k' does not name a type
    9 |         for(k=1;k<=n;k++)
      |                 ^
a.cc:9:22: error: 'k' does not name a type
    9 |         for(k=1;k<=n;k++)
      |                      ^
a.cc:13:9: error: expected unqualified-id before 'for'
   13 |         for(k=1;k<=n;k++)
      |         ^~~
a.cc:13:17: error: 'k' does not name a type
   13 |         for(k=1;k<=n;k++)
      |                 ^
a.cc:13:22: error: 'k' does not name a type
   13 |         for(k=1;k<=n;k++)
      |                      ^
a.cc:20:9: error: 'l' does not name a type
   20 |         l=k%l;
      |         ^
a.cc:21:9: error: 'cout' does not name a type
   21 |         cout<<v[k];
      |         ^~~~
a.cc:22:1: error: expected declaration before '}' token
   22 | }
      | ^