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

#include<bits/stdc++.h>

using namespace std;

int main(){
    long long X,K,D;
    cin >> X >> K >> D;
    int k = K-(X/D);
    if(k<0){
        for(int i=0;i<K;i++)X -= D;
    }
    else if(k>0){
        X %= D;
        for(int i=0;i<k;i++){
        if(i%2==0)X -=D;
        else X += D;
        }
    }
    cout << _Abs(X) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:19: error: no matching function for call to 'std::_Abs::_Abs(long long int&)'
   19 |     cout << _Abs(X) << endl;
      |                   ^
In file included from /usr/include/c++/14/valarray:103,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:166,
                 from a.cc:1:
/usr/include/c++/14/bits/valarray_before.h:63:10: note: candidate: 'constexpr std::_Abs::_Abs()'
   63 |   struct _Abs
      |          ^~~~
/usr/include/c++/14/bits/valarray_before.h:63:10: note:   candidate expects 0 arguments, 1 provided
/usr/include/c++/14/bits/valarray_before.h:63:10: note: candidate: 'constexpr std::_Abs::_Abs(const std::_Abs&)'
/usr/include/c++/14/bits/valarray_before.h:63:10: note:   no known conversion for argument 1 from 'long long int' to 'const std::_Abs&'
/usr/include/c++/14/bits/valarray_before.h:63:10: note: candidate: 'constexpr std::_Abs::_Abs(std::_Abs&&)'
/usr/include/c++/14/bits/valarray_before.h:63:10: note:   no known conversion for argument 1 from 'long long int' to 'std::_Abs&&'
Language: C++

x, k, d = map(int, input().split())

ax = abs(x)
t = k * d

if t == ax:
    print(0)
elif t < ax:
    print(ax - t)
else:
    a = ax % d
    b = d - a
    f = ax // d

    if k % 2 == f % 2:
        print(a)
    else:
        print(b)


Compiler output:
a.cc:1:1: error: 'x' does not name a type
    1 | x, k, d = map(int, input().split())
      | ^
Language: Java



import java.util.*;
import java.io.*;

public class c {
	static FastReader in = new FastReader();

	public static void main(String[] args) {
		solve();
	}
	
	static void solve()
	{
		long x = in.nextLong();
		long k = in.nextLong();
		long d = in.nextLong();
		
		if(x == 0) System.out.println(0);
		else if(x > 0)
		{
			if(x - (k * d) > 0) 
			{
				System.out.println(x - (k * d));
				return;
			}
			long mod = x / d;
			System.out.println(Math.abs(x - (mod + 1) * d));
		}
		else
		{
			if(x + (k * d) < 0) 
			{
				System.out.println(-1 * (x + (k * d)));
				return;
			}
			long mod = x / d;
			System.out.println(Math.abs(x - (mod - 1) * d));
		}
	}

	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}
}





Compiler output:
Main.java:6: error: class c is public, should be declared in a file named c.java
public class c {
       ^
1 error
Language: C++

#include <bits/stdc++.h>
#include <vector>
#include<queue>
#include<stack>
using namespace std;
#define ll long long
#define pb push_back
#define mp make_pair 
#define gogogo ios::sync_with_stdio(0);cin.tie(0);

int solve(){
  int x,k,d;
    cin>>x>>k>>d;
  int d1=d;
    int mul=k*d,ans=0;
    if(x>=mul)ans=x-mul;
    else {
      ans=x%d;
      d=ans-d;
      ans=min(ans,-d);
    }
  if(ans==0)return(d1);
     return(ans);
}
int main(){
    gogogo;
    //int t=1;
   cin>>t;
    while(t--){
     auto c=solve();
    cout<<c<<endl;
     
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:9: error: 't' was not declared in this scope; did you mean 'tm'?
   28 |    cin>>t;
      |         ^
      |         tm
Language: C++

#pragma GCC optimize "trapv"
#include<bits/stdc++.h>
#include <boost/multiprecision/cpp_int.hpp>
using namespace boost::multiprecision;
#define ll long long int
#define pb push_back
#define ppb pop_back
#define ff first
#define ss second
#define sz(s) (ll)(s.size())
#define vvi vector<vector<ll>>
#define vi vector<ll>
#define all(a) (a).begin(),(a).end()
#define pii pair<ll,ll>
#define dbg(x,y) cout<<x<<" "<<y<<endl
#define endl '\n'
#define M 1000000007
const ll INF = 1ll<<60;

using namespace std;
//-----------------------------------------//


void solve(){
	int128_t x,k,d;
	cin>>x>>k>>d;

	// x-p*d>=0
	// p<=(x/d)

	// x+p*d<=0
	// p<=(-x/d)
	if(x<0) x=-1*x; 

	ll f=x/d;

	if(k>f){
		x=x-(k-f)*d;
	}
	else{
		x-=k*d;
	}

	cout<<abs(x);
}



int main(){

	#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
	#endif
	
	int t=1;
	// cin>>t;
	while(t--){
        solve();
	}
}


Compiler output:
a.cc:3:10: fatal error: boost/multiprecision/cpp_int.hpp: No such file or directory
    3 | #include <boost/multiprecision/cpp_int.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include <stdio.h>
#include <stdlib.h>

int main(void){
long long int x,k,d;
 
    scanf("%lld %lld %lld",&x,&k,&d);
    x=labs(x);
long long int ans;
if(x>k*d){
    //printf("0\n");
     ans=x-(k*d);
}else{
    long long int idou  = x/d;
    long long int nokori = x%d;
    
    if(idou%2==1){
        //printf("1 %lld %lld \n",nokori,d);
        ans=d-nokori;
    }else{
        //printf("2 %lld %lld \n",nokori,d);
        ans=nokori
    }
}

 printf("%lld",ans);
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:22:19: error: expected ';' before '}' token
   22 |         ans=nokori
      |                   ^
      |                   ;
   23 |     }
      |     ~
Language: C++

n,k,m = map(int,input().split())
#print(k*m,n)
if k*m >= n:
    #print(min(n%m, n-(n%m)))
    x = n//m;
    left = n - x*m;
    right = left + m;
    k = k - x;
    if k&1:
        print(right)
    else:
        print(left)
    
else:
    print(n - k*m)


Compiler output:
a.cc:2:2: error: invalid preprocessing directive #print
    2 | #print(k*m,n)
      |  ^~~~~
a.cc:4:6: error: invalid preprocessing directive #print
    4 |     #print(min(n%m, n-(n%m)))
      |      ^~~~~
a.cc:1:1: error: 'n' does not name a type
    1 | n,k,m = map(int,input().split())
      | ^
a.cc:7:5: error: 'right' does not name a type
    7 |     right = left + m;
      |     ^~~~~
a.cc:8:5: error: 'k' does not name a type
    8 |     k = k - x;
      |     ^
a.cc:9:5: error: expected unqualified-id before 'if'
    9 |     if k&1:
      |     ^~
Language: C++

v = input().split(" ")
x = int(v[0])
k = int(v[1])
d = int(v[2])

if (x == 0):
    if (k % 2 == 0):
        ans = 0
    else:
        ans = d
else:
    if ((k * d) > abs(x)):
        y = abs(x) // d
        ans = abs(abs(x) - y * d)
        if ((k - y) % 2 == 1):
            ans = abs(d - ans)
    else:
        ans = abs(x) - k * d


print(ans)

Compiler output:
a.cc:1:1: error: 'v' does not name a type
    1 | v = input().split(" ")
      | ^
Language: C

#include<bits/stdc++.h>
#define forp(x,a,b) for(int x=a; x<b; x++)
#define forn(x,a,b) for(int x=a; x>b; x--)
#define SZ(a) ((int)(a).size())
#define pb push_back
#define vec(x) vector<x>
#define pii pair<int,int>
#define vi vector<int>
#define vii vector<pair<int,int>>
#define umpii unordered_map<int,int>
#define all(v) v.begin(),v.end()
#define mem(a,b) memset(a, b, sizeof a)
#define setBits(n) __builtin_popcountll(n)
#define prec(n) fixed<<setprecision(n)
#define ff first
#define ss second
#define print(x) for(auto it:x) cout<<it<<" ";
#define w(x) while(x--)
using namespace std;
typedef long long ll;
const int mod= 1e9 + 7;
ll x, k, d;
 
void solve(){ if(x<0)x*=(-1);
    if(x/d>=k){cout<<x-d*k;}
    else{int l=x/d, t=x-l*d;
        if(l%2==k%2){cout<<t;}
        else{cout<<d-t;}
    }
    
    
    
}

int main(){
 ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int t;
    cin>>x>>k>>d;
    
        solve();
        
        
    
    return 0;}


Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <stdio.h>
#include <iostream>
#include <algorithm>
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
ll gcd(ll a, ll b);
int main(){
cin.tie(0);
ll x,k,d;
std::cout << std::setprecision(20);
cin>>x>>k>>d;

if(abs(x*1.0)-k*d>=0){
    cout<<(abs(x*1.0)-k*d);
    return 0;
}
ll mod=n%d;
cout<<min(mod,abs(mod-d));
return 0;
}






ll gcd(ll a, ll b){

   if (a%b == 0)
   {
       return(b);
   }
   else
   {
       return(gcd(b, a%b));
   }

}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:8: error: 'n' was not declared in this scope
   19 | ll mod=n%d;
      |        ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;

int main() {
  ll X,K,D;
  cin >> X >> K >> D;
  X=abs(X);
  ll ans=0;
  if (X==D && K%2==0) ans = X;
  else if (X==D && K%2==1) ans = 0;
  else {
    ll wari = X/D;
    ll hiki = K-wari;
    if (hiki%2==0) ans = X-K*D;
    else ans = X-K:D-1;
  }
  cout << abs(ans);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:19: error: found ':' in nested-name-specifier, expected '::'
   16 |     else ans = X-K:D-1;
      |                   ^
      |                   ::
a.cc:16:18: error: 'K' is not a class, namespace, or enumeration
   16 |     else ans = X-K:D-1;
      |                  ^
Language: C

#include<bits/stdc++.h>
#define forp(x,a,b) for(int x=a; x<b; x++)
#define forn(x,a,b) for(int x=a; x>b; x--)
#define SZ(a) ((int)(a).size())
#define pb push_back
#define vec(x) vector<x>
#define pii pair<int,int>
#define vi vector<int>
#define vii vector<pair<int,int>>
#define umpii unordered_map<int,int>
#define all(v) v.begin(),v.end()
#define mem(a,b) memset(a, b, sizeof a)
#define setBits(n) __builtin_popcountll(n)
#define prec(n) fixed<<setprecision(n)
#define ff first
#define ss second
#define print(x) for(auto it:x) cout<<it<<" ";
#define w(x) while(x--)
using namespace std;
typedef long long ll;
const int mod= 1e9 + 7;
ll x, k, d;
 
void solve(){ if(x<0)x*=(-1);
    if(x/d>=k){cout<<x-d*k;}
    else{int l=x/d, t=x-l*d;
        if(l%2==k%2){cout<<t;}
        else{cout<<d-t;}
    }
    
    
    
}

int main(){
 ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int t;
    cin>>x>>k>>d;
    
        solve();
        
        
    
    return 0;}



Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
#include<stdio.h>
#include<cstdio> 

using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
typedef map<ll,ll>::iterator itll;
typedef long double ld;
typedef map<ll,ll> mapll;

#define con continue
#define pb push_back
#define fi first
#define se second
#define fr front()
#define one 1.0
#define INF 1000000000000000000
#define all(vl) vl.begin(),vl.end()
#define m_p make_pair 
#define sz(a) sizeof(a)
#define forn(mp,it) for(it = mp.begin();it!=mp.end();it++)
#define FOR(i,a,n) for(int i=a;i<n;i++) 
#define FORE(i,a,n) FOR(i,a,n+1)
#define Endl endl
#define eNdl endl
#define enDl endl
#define endL endl

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);
	cerr.tie(nullptr);
	ll a,b,c;
	cin>>a>>b>>c;
	if(a<c)
	{
		
	}
	if(b<=a/c)
	{
		cout<<a-b*c<<Endl;
		return 0;
	}
	ll k = a/c;
	ll yu = (b-k)%2;
	if(yu%2>0)
	{
		cout<<abs(a-k*c-c)<<endl;
		return 0;
	}
	cout<<min(abs(a-k*c),INF)<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:54:18: error: no matching function for call to 'min(long long int, long int)'
   54 |         cout<<min(abs(a-k*c),INF)<<endl;
      |               ~~~^~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:54:18: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'long int')
   54 |         cout<<min(abs(a-k*c),INF)<<endl;
      |               ~~~^~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:54:18: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   54 |         cout<<min(abs(a-k*c),INF)<<endl;
      |               ~~~^~~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
long long x,k,d;
int main(){
	cin>>x>>k>>d;
	if(k==0){
		cout<<abs(x);
		return 0;
	}
	else{
		int t=abs(x/d);
		if(t>k){
			if(x>=0)
			{
				cout<<x-t*d;
				return 0;
			}
			else{
				cout<<abs(x+t*d);
			}
		}
		if(x>=0){
			cout<<abs(x-(k-t)%2*d);
			return 0;
		}
		else{
			cout<<abs(x+(k-t)%2*d)
			return 0;
		}
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:27:47: error: expected ';' before 'return'
   27 |                         cout<<abs(x+(k-t)%2*d)
      |                                               ^
      |                                               ;
   28 |                         return 0;
      |                         ~~~~~~
Language: C++

#define local
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define rep(i,n); for(long long i = 0;i < (n);i++)
using ll = long long;
using P = pair<long long,long long>;
template <class T> using vec = vector<T>;
#ifdef local
#include "debug.cpp"
#else
#define debug(...)
#endif

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    //cout << fixed << setprecision(10);
    ll x,k,d; cin >> x >> k >> d;
    x = abs(x); debug(x);
    if(x >= k*d)cout << x-k*d << endl;
    else{
        if((k-x/d)%2)cout << abs(x%d - d) << endl;
        else cout << x%d << endl;
    }
}


Compiler output:
a.cc:10:10: fatal error: debug.cpp: No such file or directory
   10 | #include "debug.cpp"
      |          ^~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<bitset>
#include<vector>
#include<algorithm>
#include<string>
#include <cstdlib> 
using namespace std;
int main()
{
  int_64t X,K,D;
  cin >> X>>K>>D;
  for(int i=0;i<K;i++)
  {
    if(X<0)
    {
      X+=K;
    }
    else if(X>=0)
    {
      X-=K;
    }
  }
  cout << abs(X) << endl;
          
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:3: error: 'int_64t' was not declared in this scope; did you mean 'int64_t'?
   10 |   int_64t X,K,D;
      |   ^~~~~~~
      |   int64_t
a.cc:11:10: error: 'X' was not declared in this scope
   11 |   cin >> X>>K>>D;
      |          ^
a.cc:11:13: error: 'K' was not declared in this scope
   11 |   cin >> X>>K>>D;
      |             ^
a.cc:11:16: error: 'D' was not declared in this scope
   11 |   cin >> X>>K>>D;
      |                ^
Language: C++

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

int main() {
  int x,k,d;
  cin >> x >> k >> d;
  int min = 0;
  for(int i = 0; i < k+1; i++){
  int z = x + (2*i-k)*d;
  if(z < 0) z = z*(-1);
  if(z <= min || i == 0) min = z;
  }
  cout << min << endl;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <bits/stdc++.h>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> x >> k >> d;
      |   ^~~
a.cc:13:3: error: 'cout' was not declared in this scope
   13 |   cout << min << endl;
      |   ^~~~
a.cc:13:18: error: 'endl' was not declared in this scope
   13 |   cout << min << endl;
      |                  ^~~~
Language: C++

#include <iostream>

using namespace std;

int main()
{
   long long int n,m,X,K,D;
   cin >> X >> K >> D;
   X = abs(X)
   D = abs(D)
   n = X/D;
   m = X%D;
   if(n>=K) cout << X-K*D;
   else{
       K = K-n;
       if(K%2==0) cout << m;
       else cout << abs(m-D);
   }
   
   return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:14: error: expected ';' before 'D'
    9 |    X = abs(X)
      |              ^
      |              ;
   10 |    D = abs(D)
      |    ~
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <cmath>
#include <deque>
#include <queue>
#include <stack>
#include <vector>
#include <utility>
#include <iomanip>
#include <bitset>
#include <set>
#include <map>
#include <stdio.h>
#include <numeric>
#include <cstring>

#define rep(i,n) for (int i = 0; i < (n); i++)
#define rep1(i,n) for (int i = 1; i < (n); i++)
#define FOR(i,a,b) for (int i=(a); i < (b); i++)
#define MOD 1000000007 //10^9+7
#define ALL(a)  (a).begin(),(a).end()
using namespace std;
using ll = long long;
using PII = pair<int, int>;
using PLL = pair<long long, long long>;
const int INF = numeric_limits<int>::max();
constexpr ll TEN(int n) { return (n==0) ? 1 : 10*TEN(n-1); }

// 負の数にも対応した % 演算
long long mod(long long val, long long m) {
    long long res = val % m;
    if (res < 0) res += m;
    return res;
}

//greatest common divisor
long long gcd(ll a, ll b) 
{
    if (a % b == 0) {
        return b;
    } else {
        return gcd(b, a % b);
    }
}

//least common multiple
long long lcm(ll a, ll b)
{
    return a / gcd(a, b) * b ;
}

bool is_prime(ll n) {
    for (ll i = 2; i * i <= n; i++) {
        if (n % i == 0) return false;
    }
    return n != 1;
}

int main()
{
    ll x, k, d; cin >> x >> k >> d;
    ll ans;
    if (x == d) {
        ans = x;
    } else if (k*d <= x) {
        ans = x - k*d;
    } else {
        ll tmp1 = x % d;
        ll tmp2 = tmp1 - d;
        if (tmp1 < 0)
            tmp1 = tmp1 * (-1);
        if (tmp2 < 0)
            tmp2 = tmp2 * (-1);
        ans = min(tmp1, abstmp2);
    }
    cout << ans << endl; 
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:75:25: error: 'abstmp2' was not declared in this scope; did you mean 'tmp2'?
   75 |         ans = min(tmp1, abstmp2);
      |                         ^~~~~~~
      |                         tmp2
Language: C++

#include <bits/stdc++.h>
#include <algorithm>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define N 110
#define pb push_back
#define fi first
#define se second
#define si size()
#define ll long long
#define mp make_pair
#define iter ::iterator
#define all(v) v.begin(), v.end()
#define READ(f) freopen (f, "r", stdin)
#define WRITE(f) freopen (f, "w", stdout)
#define pp pop_back
#define mapiter map<int, int>::iterator
#define pii pair<int, int>
#define forn(i, n) for(ll i = 0; i < n; ++i)
#define forn1(i, n) for(int i = 1; i <= n; ++i)
#define forr(i, n) for(int i = n - 1; i >= 0; --i)
#define forr1(i, n)	for(int i = n; i >= 1; --i)
#define barnarnar ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define elif else if
#define lld long double
#define r0 return 0
#define EPS 1e-7
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> 
 
const int inf = 1e9 + 1;
const ll modw = 1e9 + 7;
 
const ll mods[2] = {1000000009ll, 1000000007ll};
const ll p[2] = {31, 53};
 
using namespace std;
using namespace __gnu_pbds;

int main()
{
	barnarnar
	ll x, k, d;
	cin >> x >> k >> d;
	ll ans1 = x % d, ans2 = (-x) % d;
	if(ans1 < 0)	ans1 += d;
	if(ans2 < 0)	ans2 += d;
	ll need1 = (abs(ans1 - x) / d), need2 = (abs(ans2 - x) / d);
	//cout << ans1 << ' ' << need1 << ' ' << ans2 << ' ' << need2 << endl;
	if(k >= max(need1, need2))
	{
		if(ans1 == 0)
		{
			if(need1 % 2 == k % 2)	cout << 0;
			else	cout << d;
			r0;
		}
		if(k % 2 == need1 % 2)	cout << abs(ans1);
		else	cout << abs(ans2);
	}
	else
	{
		if(x < 0)	cout << abs(x + k * d);
		else	cout << abs(x - k * d;)
	}
}	
// # pog-unlimitation

/*
Merami isn't so great?
Are you kidding me?
When was the last time you saw a player with such aim ability and movement with a tablet?
Merami puts the game in another level, and we will be blessed if we ever see a player with his skill and passion for the game again.
Whitecat breaks records.
Vaxei breaks records.
Merami breaks the rules.
You can keep your statistics.
I prefer the magic.
*/

Compiler output:
a.cc: In function 'int main()':
a.cc:63:46: error: expected ')' before ';' token
   63 |                 else    cout << abs(x - k * d;)
      |                                    ~         ^
      |                                              )
a.cc:63:47: error: expected primary-expression before ')' token
   63 |                 else    cout << abs(x - k * d;)
      |                                               ^
Language: Java

public class Main
{
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		long x=sc.nextLong();
		long k=sc.nextLong();
		long d=sc.nextLong();
		long[] dp=new long[k];
		dp[0]=Math.min(Math.abs(x-d),Math.abs(x+d));
		for(long i=1;i<k;i++){
		    dp[i]=Math.min(Math.abs(dp[i-1]-d),Math.abs(dp[i-1]+d));
		}
		System.out.println(dp[k-1]);
	}
}

Compiler output:
Main.java:4: error: cannot find symbol
		Scanner sc=new Scanner(System.in);
		^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
		Scanner sc=new Scanner(System.in);
		               ^
  symbol:   class Scanner
  location: class Main
Main.java:8: error: incompatible types: possible lossy conversion from long to int
		long[] dp=new long[k];
		                   ^
Main.java:11: error: incompatible types: possible lossy conversion from long to int
		    dp[i]=Math.min(Math.abs(dp[i-1]-d),Math.abs(dp[i-1]+d));
		       ^
Main.java:11: error: incompatible types: possible lossy conversion from long to int
		    dp[i]=Math.min(Math.abs(dp[i-1]-d),Math.abs(dp[i-1]+d));
		                                ^
Main.java:11: error: incompatible types: possible lossy conversion from long to int
		    dp[i]=Math.min(Math.abs(dp[i-1]-d),Math.abs(dp[i-1]+d));
		                                                    ^
Main.java:13: error: incompatible types: possible lossy conversion from long to int
		System.out.println(dp[k-1]);
		                       ^
7 errors
Language: C++

#include <bits/stdc++.h>
using namespace std;
using pii = pair<int,int>;
using pll = pair<long long, long long>;
const int INF = 1<<29;

const int MOD = 1000000007;
long long ruizyou(long long m,long long n){
  if(m == 0)return 0;
  if(m == 1)return 1;
  long long ans = 1;
  long long tmp = m;
  for(int i=0;i<=30;i++){
    if(n & (1<<i)){
      ans *= tmp;
      ans %= MOD;
    }
    tmp *= tmp;
    tmp %= MOD;
  }
  return ans;
}
long long kaizyou(long long x){
  if(x == 0)return 1;
  return x * kaizyou(x-1) % MOD;
}
long long comb(long long x,long long y){
  long long bunsi = kaizyou(x);
  long long bunbo = kaizyou(x-y) * kaizyou(y) % MOD;
  return bunsi * ruizyou((int)bunbo,MOD-2) % MOD;
}
struct unionfind{
  vector<int> par;
  vector<int> hukasa;
  unionfind(int n){
    par = vector<int>(n);
    hukasa = vector<int>(n,0);
    for(int i=0;i<n;i++){
      par.at(i) = i;
    }
  }
  int root(int x){
    if(par.at(x) == x)return x;
    return root(par.at(x));
  }
  void unite(int x,int y){
    int rx = root(x);
    int ry = root(y);
    if(rx == ry)return;
    if(hukasa.at(rx) >= hukasa.at(ry)){
      par.at(ry) = rx;
      hukasa.at(rx) = max(hukasa.at(ry) + 1,hukasa.at(rx));
    }
    else{
      par.at(rx) = ry;
    }
  }
  bool same(int x,int y){
    return root(x) == root(y);
  }
};

int main(){
  long long x,k,d;
  cin >> x >> k >> d;
  if(x < 0)x*=(-1);
  if(x > k*d){
    cout << x-k*d << endl;
  }
  else{
    long long a = x / d;
    x =　x - a*d;
    a = k-a;
    long long b = a/2;
    if(a - 2*b ==1){
      cout << d-x << endl;
    }
    else{
      cout << x << endl;
    }
  }
}

Compiler output:
a.cc:72:8: error: extended character 　 is not valid in an identifier
   72 |     x =　x - a*d;
      |        ^
a.cc: In function 'int main()':
a.cc:72:8: error: '\U00003000x' was not declared in this scope
   72 |     x =　x - a*d;
      |        ^~~
Language: C++

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

int main()
{
  int64_t X, K, D;
  cin >> X >> K >> D;
  X = abs(X);

  int64_t mi;
  int64_t kd = K * D;
  if (__builtin_smulll_overflow(K, D, &kd))
    mi = 0;
  else
    mi = X - K * D;
  if (mi > 0)
  {
    cout << mi << endl;
  }
  else
  {
    int64_t p = X / D;
    if ((K - p) % 2 == 0)
    {
      cout << X % D << endl;
    }
    else
    {
      int64_t r = X % D;
      int64_t r1 = X % D + D;
      int64_t r2 = abs(r - D);
      cout << min(r1, r2) << endl;
    }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:39: error: invalid conversion from 'int64_t*' {aka 'long int*'} to 'long long int*' [-fpermissive]
   12 |   if (__builtin_smulll_overflow(K, D, &kd))
      |                                       ^~~
      |                                       |
      |                                       int64_t* {aka long int*}
<built-in>: note:   initializing argument 3 of 'bool __builtin_smulll_overflow(long long int, long long int, long long int*)'
Language: C++

# -*- coding: utf-8 -*-
"""
@author: Saurav Sihag
"""

rr = lambda: input().strip()
rri = lambda: int(rr())
# rri = lambda: int(stdin.readline())
rrm = lambda: [int(x) for x in rr().split()]
# stdout.write(str()+'\n')

from sys import stdin, stdout, setrecursionlimit

def sol():
    x, k, d=rrm()
    x=abs(x)
    a=x//d
    if a>k:
        print(abs(x-k*d))
        return
    rk=k-a
    xa=x-a*d
    # print(x, k, d, a, rk, xa)
    if rk%2==1:
        xa-=d
    print(abs(xa))
    return

    
# sol()
def main():
    # T = rri()
    # for t in range(1, T + 1):
        ans=sol()
        # print("Case #{}: {}".format(t, ans))

main()

Compiler output:
a.cc:1:3: error: invalid preprocessing directive #-
    1 | # -*- coding: utf-8 -*-
      |   ^
a.cc:2:3: warning: missing terminating " character
    2 | """
      |   ^
a.cc:2:3: error: missing terminating " character
a.cc:3:1: error: stray '@' in program
    3 | @author: Saurav Sihag
      | ^
a.cc:4:3: warning: missing terminating " character
    4 | """
      |   ^
a.cc:4:3: error: missing terminating " character
a.cc:8:3: error: invalid preprocessing directive #rri
    8 | # rri = lambda: int(stdin.readline())
      |   ^~~
a.cc:10:3: error: invalid preprocessing directive #stdout
   10 | # stdout.write(str()+'\n')
      |   ^~~~~~
a.cc:23:7: error: invalid preprocessing directive #print
   23 |     # print(x, k, d, a, rk, xa)
      |       ^~~~~
a.cc:30:3: error: invalid preprocessing directive #sol
   30 | # sol()
      |   ^~~
a.cc:32:7: error: invalid preprocessing directive #T
   32 |     # T = rri()
      |       ^
a.cc:33:7: error: invalid preprocessing directive #for
   33 |     # for t in range(1, T + 1):
      |       ^~~
a.cc:35:11: error: invalid preprocessing directive #print
   35 |         # print("Case #{}: {}".format(t, ans))
      |           ^~~~~
a.cc:2:1: error: expected unqualified-id before string constant
    2 | """
      | ^~
Language: C++

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
//#include <__msvc_all_public_headers.hpp>
 
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimization ("unroll-loops")
 
typedef long long  ll;

#define press_F_to_pay_respect ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#define forn for(int i=0;i<n;i++) 
#define fore(i,a,b) for(int i = a; i < (b); i++)
#define pb push_back 
#define pob pop_back()
#define mp make_pair 
#define sc second 
#define f first 
#define ld long double
#define kek cout<<"\n"; 
#define rep(i,a,b) for(int i=a;i<b;i++)
#define all(v) ((v).begin()), ((v).end()) 
#define halt {cout<<"NO"; return 0;}

const ll MOD = 1e9 + 7;
const ll MOD1 = 998244353;
const int N = 5010;
const int INF = 1e8;
const ll LL_INF=1e18;
const long double pi=3.1415926535;
using namespace std;
using namespace __gnu_pbds;
typedef tree<ld,null_type,less<ld>,rb_tree_tag,tree_order_statistics_node_update> indexed_set;
int divide(int a, int b)
{
          return (a+b-1)/b;
}
int main()
{
    #if defined(_DEBUG)
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
    #endif
 press_F_to_pay_respect;
 // cout << fixed << setprecision(12) << ans;
 // string al = "abcdefghijklmnopqrstuvwxyz";
 int questions=1;
 // cin>>questions;
 while(questions--)
 {
        ll x,k,d;
        cin>>x>>k>>d;
        ll was=x;
        if(x==0) 
        {
                  if(k&1) cout<<abs(x+d);
                  else cout<<abs(x);
                  return 0;
        }
        ll cnt=abs(x/d);
        if(k<=cnt)
        {
             if(x<0) x+=k*d;
             else x-=k*d;
        }
        else 
        {
               if(x>0) x-=cnt*d;
               else x+=cnt*d;
               k-=cnt;
              : if(x==0)
               {
                  if(k&1) cout<<abs(x+d);
                  else cout<<abs(x);
                  return 0;   
               }
               if(x>0) 
               {
                         
                     if(k&1) cout<<abs(x-d);
                     else cout<<abs(x);
                     return 0;
               }
               else
               {
                         if(k&1) cout<<abs(x+d);
                         else cout<<abs(x);
                         return 0;
               }
        }
        cout<<abs(x);
         
 }
 
 
 
 
 // !!! LOOK AT NUMBER OF QUESTIONS IN A PROBLEM !!! (cin>>questions)
 
 
 
  // cout <<"Runtime is:"<<clock() * 1.0 / CLOCKS_PER_SEC <<endl;
   return 0;
   
   
 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:71:15: error: expected primary-expression before ':' token
   71 |               : if(x==0)
      |               ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MM = 1000000000;
const int MOD = MM + 7;
const int MAX = 510000;
#define rep(i, n) for(ll i=0; i<n; i++)
#define Rep(i, j, n) for(ll i=j; i<n; i++)
#define all(vec) vec.begin(), vec.end()
template<class T> inline bool chmin(T& a, T b) {if(a > b) {a = b; return true;} return false;}
template<class T> inline bool chmax(T& a, T b) {if(a < b) {a = b; return true;} return false;}
const ll INF = 1LL << 60;
const double pi = acos(-1.0);

int main() {
    ll x, k, d; cin >> x >> k >> d;
    ll a = (k - x/d) / 2;
    if(abs(x) >= k*d) cout << abs(x) - k*d << endl;
    else cout << min(abs(abs(x) + (2 * a - k) * d), abs(abs(x) + (2 * (a+1) - k) * d), abs(abs(x) + (2 * (a+2) - k) * d)) << endl;
}


Compiler output:
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h: In instantiation of 'constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare) [with _Tp = long long int; _Compare = long long int]':
a.cc:19:21:   required from here
   19 |     else cout << min(abs(abs(x) + (2 * a - k) * d), abs(abs(x) + (2 * (a+1) - k) * d), abs(abs(x) + (2 * (a+2) - k) * d)) << endl;
      |                  ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:284:17: error: '__comp' cannot be used as a function
  284 |       if (__comp(__b, __a))
      |           ~~~~~~^~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n)for(long long i=0;i<(long long)(n);++i)
#define all(a) a.begin(), a.end()
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
 
const ll MOD=1e9+7;
const ll INF=1e18;
const double pi=acos(-1);
int dx[8] = {1,0,-1,0,1,1,-1,-1};
int dy[8] = {0,1,0,-1,-1,1,1,-1};

const int MAX=510000;
int main(){
  cin.tie(0);
  ios::sync_with_stdio(false); 
  
  int 128_t x,k,d;
  cin >> x >> k >> d;
  if(x==0 && k%2==0)cout << 0 << endl;
  else if(x==0 && k%2==1)cout << d << endl;
  else if(x>0 && x-k*d>=0)cout << abs(x-k*d) << endl;
  else if(x<0 && x+k*d<=0)cout << abs(x+k*d) << endl;
  else if(x>0 && x-k*d<0){
    k-=abs(x)/d;
    x-=(abs(x)/d)*d;
    if(k%2==0)cout << abs(x) << endl;
    else cout << abs(x-d) << endl;
  }
  else if(x<0 && x+k*d>0){
    k-=abs(x)/d;
    x+=(abs(x)/d)*d;
    if(k%2==0)cout << abs(x) << endl;
    else cout << abs(x+d) << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:7: error: expected unqualified-id before numeric constant
   21 |   int 128_t x,k,d;
      |       ^~~~~
a.cc:22:10: error: 'x' was not declared in this scope; did you mean 'dx'?
   22 |   cin >> x >> k >> d;
      |          ^
      |          dx
a.cc:22:15: error: 'k' was not declared in this scope
   22 |   cin >> x >> k >> d;
      |               ^
a.cc:22:20: error: 'd' was not declared in this scope; did you mean 'dy'?
   22 |   cin >> x >> k >> d;
      |                    ^
      |                    dy
Language: C++

#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_int.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("O3")
#define REP(i,n) for(int i=0;i<n;i++)
#define REPP(i,n) for(int i=1;i<=n;i++)
#define ALL(obj) (obj).begin(), (obj).end()
#define EPS (1e-9)
#define INF (1e17)
#define PI (acos(-1))
//const double PI = acos(-1);
//const double EPS = 1e-15;
//long long INF=(long long)1E17;
#define i_7 (long long)(1e9+7)
//#define i_7 998'244'353
long mod(long a){
    long long c=a%i_7;
    if(c>=0)return c;
    return c+i_7;
}
long long po(long a, long b){
    if(b==0){
        return 1;
    }
    
    long long z = po(a,b/2);
    z = mod(z*z);
    if(b%2!=0){
        z = mod(a*z);
    }
    return z;
}
 
bool prime_(int n){
  if(n==1){
    return false;
  }else if(n==2){
    return true;
  }else{
    for(int i=2;i<=std::sqrt(n);i++){
      if(n%i==0){
        return false;
      }
    }
    return true;
  }
}
 
long long gcd_(long long a, long long b){
  if(a<b){
    std::swap(a,b);
  }
  if(a%b==0){
    return b;
  }else{
    return gcd_(b,a%b);
  }
}
 
long long lcm_(long long x, long long y){
  return (x/gcd_(x,y))*y;
}
 
using namespace std;
using namespace boost::multiprecision;
//using namespace __gnu_pbds;

int main(){
  //using namespace std;
  cpp_int x, k, d;
  cin>>x>>k>>d;
  cpp_int r = (x % d + d) % d;
  cpp_int ans = INF;
  cpp_int q;
  q = (x - r) / d;
  cpp_int cnt;
  cnt = k - abs(q);
  if(cnt >= 0 && cnt % 2 == 0) ans = min(ans, r);
  q = (x - (r - d)) / d;
  cnt = k - abs(q);
  if(cnt >= 0 && cnt % 2 == 0) ans = min(ans, d - r);
  cpp_int temp = abs(x + k * d);
  ans = min(ans, temp);
  temp = abs(x - k * d);
  ans = min(ans, temp);
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc:2:10: fatal error: boost/multiprecision/cpp_int.hpp: No such file or directory
    2 | #include <boost/multiprecision/cpp_int.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

X, K, D = map(int, input().split())
deka = pow(10,20)
X = abs(X)

if K * D < X:
    print(abs(X - K * D))
else:
    cnt1 = X // D
    ans1 = deka
    if cnt1 <= K:
        rem = K - cnt1
        if rem % 2 == 0:
            ans1 = X - cnt1 * D
        else:
            ans1 = abs(X - cnt1 * D - D)
    
    cnt2 = (X+D-1) // D
    ans2 = deka
    if cnt2 <= K:
        rem = K - cnt2
        if rem%2 == 0:
            ans2 = cnt2 * D - X
        else:
            ans2 = abs(cnt2 * D - X - D)
    
    print(min(ans1, ans2))

Compiler output:
a.cc:1:1: error: 'X' does not name a type
    1 | X, K, D = map(int, input().split())
      | ^
Language: C++

x, k, d = map(int, input().split())
l = x-k*d
r = x+k*d
if l <= 0 and r >= 0:
    if (x/d) % 2 == k % 2:
        print(x % d)
    else:
        print(d - x % d)
elif r < 0:
    print(abs(r))
else:
    print(abs(l))


Compiler output:
a.cc:1:1: error: 'x' does not name a type
    1 | x, k, d = map(int, input().split())
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main()#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main()
{
    ll x,k,d;cin>>x>>k>>d;
    x=abs(x);
    if(k*d<=x) cout<<x-k*d;
    else{
        ll cnt=x/d;
        if((k-cnt)%2==0) cout<<x-cnt*d;
        else cout<<abs(x-(cnt+1)*d);
    }
}


{
ll x,k,d;cin>>x>>k>>d;
if(k*d<=x) cout<<x-k*d;
else{
    ll cnt=x/d;
    if((k-cnt)%2==0) cout<<x-cnt*d;
    else cout<<abs(x-(cnt+1)*d);
}
}



Compiler output:
a.cc:4:11: error: stray '#' in program
    4 | int main()#include<bits/stdc++.h>
      |           ^
a.cc:4:12: error: expected initializer before 'include'
    4 | int main()#include<bits/stdc++.h>
      |            ^~~~~~~
a.cc:20:1: error: expected unqualified-id before '{' token
   20 | {
      | ^
Language: C++

x,k,d=map(int,input().split())
x=abs(x)
if x>k*d:
  print(x-k*d)
else:
  k-=x//d
  if k%2==0:
    print(x%d)
  else :
    print(d-x%d)

Compiler output:
a.cc:1:1: error: 'x' does not name a type
    1 | x,k,d=map(int,input().split())
      | ^
Language: C++

#include <self/utility>
#include <self/debug>
using namespace std;
ll x,k,d;

int main()
{
//	freopen("input.txt","r",stdin);
	cin>>x>>k>>d;
	if(x<0) x=-x;
	ll mk=x/d;
	if(mk>=k)
	{
		cout<<x-k*d<<endl;
		return 0;
	}
	cout<<((k-mk)%2==0?x-mk*d:(1+mk)*d-x)<<endl;
	return 0;
}

Compiler output:
a.cc:1:10: fatal error: self/utility: No such file or directory
    1 | #include <self/utility>
      |          ^~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
using namespace std;
long long x,k,d;
int main()
{
	cin>>k>>x>>d;
	k=abs(k);
	if(x*d>0 && x*d<k)
	{
		cout<<k-x*d<<endl;
		return 0;
	}
	if((x-k/d)%2k==0)
	{
		cout<<k%d<<endl;
	}
	else
	{
		cout<<d-k%d<<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:20: error: fixed-point types not supported in C++
   13 |         if((x-k/d)%2k==0)
      |                    ^~
Language: C++

#include<bits/stdc++.h>
using namespace std;
long long x,k,d;
int main()
{
	cin>>k>>x>>d;
	k=abs(k);
	if(x*d>0 && x*d<k)
	{
		cout<<k-x*d<<endl;
		return 0;
	}
	if((x-/d)%2k==0)
	{
		cout<<k%d<<endl;
	}
	else
	{
		cout<<d-k%d<<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:15: error: expected primary-expression before '/' token
   13 |         if((x-/d)%2k==0)
      |               ^
a.cc:13:19: error: fixed-point types not supported in C++
   13 |         if((x-/d)%2k==0)
      |                   ^~
Language: C

#include <bits/stdc++.h>
// #include <atcoder/all>

using namespace std;
// using namespace atcoder;

typedef long long ll;

#define MAX 1000000000

ll solve(int n, int k, vector<int> &p, vector<int> &c) {
    ll ret = -MAX;
    for (int i = 0; i < n; i++) {
        vector<int> seen(n, 0);
        int now = i;
        int cnt = 0;
        ll max_score1 = -MAX;
        ll cur_score1 = 0;
        vector<int> cnt2(n, -1);
        while (!seen.at(now) && cnt < k) {
            seen.at(now) = 1;
            cnt2.at(now) = cnt;
            cur_score1 += c.at(p.at(now));
            max_score1 = max(max_score1, cur_score1);
            now = p.at(now);
            cnt++;
        }
        ll jtoj = -1;
        if (cnt2.at(now) > -1) {
            jtoj = cnt - cnt2.at(now);
        }
        if (cnt == k) {
            ret = max(ret, max_score1);
            continue;
        }
        ll cur_score2 = cur_score1;
        ll max_score2 = max_score1;
        if (k - cnt <= jtoj) {
            while (cnt < k) {
                cur_score2 += c.at(p.at(now));
                max_score2 = max(max_score2, cur_score2);
                now = p.at(now);
                cnt++;
            }
            ret = max(ret, max_score2);
            continue;
        }
        for (int j = 0; j < jtoj; j++) {
            cur_score2 = c.at(p.at(now));
            max_score2 = max(max_score2, cur_score2);
            now = p.at(now);
            cnt++;
        }
        if (cur_score2 <= cur_score1) {
            ret = max(ret, max_score2);
            continue;
        }
        cur_score2 += (cur_score2 - cur_score1) * ((k - cnt) / jtoj);
        max_score2 = cur_score2;
        cnt += jtoj * ((k - cnt) / jtoj);
        while (cnt < k) {
            cur_score2 += c.at(p.at(now));
            max_score2 = max(max_score2, cur_score2);
            now = p.at(now);
            cnt++;
        }
        ret = max(ret, max_score2);
    }
    return ret;
}

int main() {
    int n, k;
    cin >> n >> k;
    vector<int> p(n), c(n);
    for (int i = 0; i < n; i++) {
        cin >> p.at(i);
        p.at(i)--;
    }
    for (int i = 0; i < n; i++) {
        cin >> c.at(i);
    }
    cout << solve(n, k, p, c) << endl;
    return 0;
}

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

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,k;
  cin>>n>>k;
  vector<int> p(n),c(n);
  for(int i=0;i<n;i++) cin>>p[i];
  for(int i=0;i<n;i++) cin>>c[i];
  for(int i=0;i<n;i++) p[i]--;
  long long ans=-1e18;
  for(int si;si<n;si++){
    int x=si;
    vector<int> s;
    long long tot=0;
    while(1){
      x=p[x];
      s.push_back(c[x]);
      tot+=c[x];
      if(x==ci) break;
    }
   int l=s.size();
   long long t=0;
    for(int i=0;i<l;i++){
      t+=s[i];
      if(i+1>k) break;
      long long now=t;
      if(tot>0){
        long long e=(k-(i+1))/l;
        now+=tot*e;
      }
      ans=max(ans,now);
    }
  }
  cout<<ans<<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:13: error: 'ci' was not declared in this scope; did you mean 'si'?
   19 |       if(x==ci) break;
      |             ^~
      |             si
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,k;
  cin>>n>>k;
  vector<int> p(n),c(n);
  for(int i=0;i<n;i++) cin>>p[i];
  for(int i=0;i<n;i++) cin>>c[i];
  for(int i=0;i<n;i++) p[i]--;
  long long ans=-1e18;
  for(int si;si<n;si++){
    int x=si;
    vector<int> s;
    ll tot=0;
    while(1){
      x=p[x];
      s.push_back(c[x]);
      tot+=c[x];
      if(x==ci) break;
    }
   int l=s.size();
   long long t=0;
    for(int i=0;i<l;i++){
      t+=s[i];
      if(i+1>k) break;
      long long now=t;
      if(tot>0){
        long long e=(k-(i+1))/l;
        now+=tot*e;
      }
      ans=max(ans,now);
    }
  }
  cout<<ans<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:5: error: 'll' was not declared in this scope
   14 |     ll tot=0;
      |     ^~
a.cc:18:7: error: 'tot' was not declared in this scope
   18 |       tot+=c[x];
      |       ^~~
a.cc:19:13: error: 'ci' was not declared in this scope; did you mean 'si'?
   19 |       if(x==ci) break;
      |             ^~
      |             si
a.cc:27:10: error: 'tot' was not declared in this scope
   27 |       if(tot>0){
      |          ^~~
Language: C++

#include <algorithm>
#include <iostream>

using namespace std;

const int N = 5000;

int ii[N], cc[N], qu[N];
bool visited[N];

int main() {
	int n, k; cin >> n >> k;
	for (int i = 0; i < n; i++) {
		int p; cin >> p, p--;
		ii[i] = p;
	}
	for (int i = 0; i < n; i++)
		cin >> cc[i];
	long long ans = LLONG_MIN;
	for (int i = 0; i < n; i++) {
		fill(visited, visited + n, false);
		int cnt = 0;
		int i_ = i;
		while (!visited[i_]) {
			qu[cnt++] = i_;
			visited[i_] = true;
			i_ = ii[i_];
		}
		int m = 0;
		int i__ = i;
		while (i__ != i_) {
			m++;
			i__ = ii[i__];
		}
		if (k < m) {
			long long a = 0;
			for (int h = 0; h < k; h++)
				ans = max(ans, a += cc[qu[h]]);
		} else {
			long long a = 0;
			for (int h = 0; h < m; h++)
				ans = max(ans, a += cc[qu[h]]);
			long long b = 0;
			for (int h = m; h < cnt; h++)
				b += cc[qu[h]];
			if (b > 0) {
				long long b_ = 0;
				for (int h = m; h < cnt && h < k; h++) {
					ans = max(ans, a + (k - m - (h - m)) / (cnt - m) * b + b_);
					b_ += cc[qu[h]];
				}
			} else {
				long long b_ = 0;
				for (int h = m; h < cnt && h < k; h++) {
					if (h > 0)
						ans = max(ans, a + b_);
					b_ += cc[qu[h]];
				}
			}
		}
	}
	cout << ans << '\n';
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:25: error: 'LLONG_MIN' was not declared in this scope
   19 |         long long ans = LLONG_MIN;
      |                         ^~~~~~~~~
a.cc:3:1: note: 'LLONG_MIN' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    2 | #include <iostream>
  +++ |+#include <climits>
    3 |
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll mod = 1e9+7;
const long long INF = 1e15;

ll main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);

    ll n,k;
    cin >> n >> k;
    vector<ll> p(n),c(n);

    for(ll i = 0; i < n; i++){
        cin >> p[i];
        p[i]--;
    }
    for(ll i = 0; i < n; i++) cin >> c[i];

    vector<vector<ll>> cost(n);
    vector<ll> sum(n,0);

    for(ll i = 0; i < n; i++){
        ll s,now,nxt;
        s = now = i;
        bool unarrive = true;
        
        while(unarrive){
            now = p[now];
            cost[i].push_back(c[now]);
            if(now == s) unarrive = false;
        }
        
    }

    for(ll i = 0; i < n; i++){
        for(ll j = 0; j < (ll)cost[i].size(); j++){
            sum[i] += cost[i][j];
        }
    }

    ll ans = -(ll)1e19;


    for(ll i = 0; i < n; i++){
        if(sum[i] < 0){
            ll mx = cost[i][0];
            ll tmp = 0;
            for(auto p:cost[i]){
                tmp += p;
                mx = max(mx,tmp);
            }
            ans = max(ans,mx);
            continue;
        }
        ll can = 0;
        can += sum[i]*(k/(cost[i].size()));
        ll m = k%cost[i].size();
        ll mx = 0;
        ll tmp = 0;
        for(ll j = 0; j < m; j++){
            tmp += cost[i][j];
            mx = max(mx,tmp);
        }
        can += mx;
        ans = max(ans,can);
    } 

    cout << ans << endl;
    
    return 0;
}

Compiler output:
a.cc:7:1: error: '::main' must return 'int'
    7 | ll main(){
      | ^~