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

#include <iostream>

using namespace std;

int main(){
  int n,d;
  cin>>n>>d;
  memo=d*2+1
  int ans=(n+memo-1)/memo;
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'memo' was not declared in this scope
    8 |   memo=d*2+1
      |   ^~~~
a.cc:10:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   10 |   cout<<ans<<endl;
      |         ^~~
      |         abs
Language: Java

import java.util.Scanner;

public class main{
  public static void main(String[] args){
  
  Scanner sc = new Scanner(System.in);
  int N = sc.nextInt();
  int D = sc.nextInt();
  int n;
  
  n = N / (2*D+1);
  System.out.println(n+1);
  }
}
  

Compiler output:
Main.java:3: error: class main is public, should be declared in a file named main.java
public class main{
       ^
1 error
Language: Java

import java.util.Scanner;

public class main{
  public static void main(){
  
  Scanner sc = new Scanner(System.in);
  int N = sc.nextInt();
  int D = sc.nextInt();
  int n;
  
  n = N / (2*D+1);
  System.out.println(n+1);
  }
}
  

Compiler output:
Main.java:3: error: class main is public, should be declared in a file named main.java
public class main{
       ^
1 error
Language: Java

public static void main(){
  
  Scanner sc = new Scanner(System.in);
  int N = sc.nextInt();
  int D = sc.nextInt();
  int n;
  
  n = N / (2*D+1);
  System.out.println(n+1);
}
  

Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
public static void main(){
              ^
  (use --enable-preview to enable unnamed classes)
1 error
Language: C++

#include <iostream>
using namaspace std;
int main() {
  int a, b;
  cin >> a >> b;
  int d = b * 2 + 1;
  cout << (a - (d-1)) / d << '\n';
}


Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namaspace'
    2 | using namaspace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin >> a >> b;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   cout << (a - (d-1)) / d << '\n';
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C

#include"stdio.h"
int main(void){
  int n,d;
  scanf("%d %d",&n,&d);
  while(n+d>=0){
  	n=n-(2*d+1);
  }
  printf("%d",n)
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:17: error: expected ';' before 'return'
    8 |   printf("%d",n)
      |                 ^
      |                 ;
    9 |   return 0;
      |   ~~~~~~
Language: C

#include<stdio.h>
int main(){
	int N,D;
	int count=0;
	scacf("%d%d",&N,&D);
	while(N<0){
		N-=D*2;
		count++;
	}
	pirntf("%d",count);
	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:5:9: error: implicit declaration of function 'scacf'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    5 |         scacf("%d%d",&N,&D);
      |         ^~~~~
      |         scanf
main.c:10:9: error: implicit declaration of function 'pirntf'; did you mean 'printf'? [-Wimplicit-function-declaration]
   10 |         pirntf("%d",count);
      |         ^~~~~~
      |         printf
Language: Java

import java.util.Scanner;

public class Main{
	public static void main(String[]args){
    Scanner sc=new Scanner(System.in);
      int n=sc.nextInt();
      int d=sc.nextInt();
      int sta=d*2+1;
      for(i=0;i<20;i++){
      if(sta*i>=n){
      System.out.println(i);
        break;
      }
      }

    }
}

Compiler output:
Main.java:9: error: cannot find symbol
      for(i=0;i<20;i++){
          ^
  symbol:   variable i
  location: class Main
Main.java:9: error: cannot find symbol
      for(i=0;i<20;i++){
              ^
  symbol:   variable i
  location: class Main
Main.java:9: error: cannot find symbol
      for(i=0;i<20;i++){
                   ^
  symbol:   variable i
  location: class Main
Main.java:10: error: cannot find symbol
      if(sta*i>=n){
             ^
  symbol:   variable i
  location: class Main
Main.java:11: error: cannot find symbol
      System.out.println(i);
                         ^
  symbol:   variable i
  location: class Main
5 errors
Language: C++

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

int32_t main()
{
  int n, d;
  cin>>n>>d;
  
  cout<<ceil(c/(2*d+1))<<"\n";
  return 0;
}

Compiler output:
a.cc: In function 'int32_t main()':
a.cc:10:14: error: 'c' was not declared in this scope
   10 |   cout<<ceil(c/(2*d+1))<<"\n";
      |              ^
Language: C

#include <stdio.h>
int main(){
int N,D,u;
scanf("%d %d",&N,&D);
if((D>=1&&D<=20)&&(N>=1&&N<=20))
u=2*s+1;
N/=(float)u;
if(N==(int)N)
N=(int)N;
else
N/=(int)u;
N+=1;
{printf("%d",(N);
}
}


Compiler output:
main.c: In function 'main':
main.c:6:5: error: 's' undeclared (first use in this function)
    6 | u=2*s+1;
      |     ^
main.c:6:5: note: each undeclared identifier is reported only once for each function it appears in
main.c:13:17: error: expected ')' before ';' token
   13 | {printf("%d",(N);
      |        ~        ^
      |                 )
main.c:13:18: error: expected ';' before '}' token
   13 | {printf("%d",(N);
      |                  ^
      |                  ;
   14 | }
      | ~
Language: C++

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


int main(){
  int N,D;
  cin >> N>>D;
  int i=1;
  int look=0;
  while(1){
    look+=2D+1;
    if(look>=N){
      return i;
    }
    i++;
  }
  cout<<i<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: unable to find numeric literal operator 'operator""D'
   11 |     look+=2D+1;
      |           ^~
Language: C++

#include<bits/stdc++.h>
using namespace std;
 
int main(){
int n, d;
cin >> n >> d;
(n % (2*d+1)) ? cout << n / (2*d_1) + 1 : cout << n / (2*d+1) ;
 cout << "\n";
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:32: error: 'd_1' was not declared in this scope
    7 | (n % (2*d+1)) ? cout << n / (2*d_1) + 1 : cout << n / (2*d+1) ;
      |                                ^~~
Language: C++

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

int main(){
int n, d;
cin >> n >> d;
(n % (2d+1)) ? cout << n / (2*d_1) + 1 : cout << n / (2*d+1) ;
 cout << "\n";
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:7: error: unable to find numeric literal operator 'operator""d'
    7 | (n % (2d+1)) ? cout << n / (2*d_1) + 1 : cout << n / (2*d+1) ;
      |       ^~
a.cc:7:31: error: 'd_1' was not declared in this scope
    7 | (n % (2d+1)) ? cout << n / (2*d_1) + 1 : cout << n / (2*d+1) ;
      |                               ^~~
Language: C++

#include <iostream>
using namespace std;

int main()
{
  int n,d;
  cin>>n>>d;
  temp = 2*d + 1;
  if(n%temp==0){cout<<n%temp;}
  else {
    cout<< (n%temp)+1;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'temp' was not declared in this scope; did you mean 'tm'?
    8 |   temp = 2*d + 1;
      |   ^~~~
      |   tm
Language: C

#include<stdo.h>

int main(){
  int a, b;
  scanf("%d %d", &a, &b);
  
  for(int i; i<a; i++){
    if((b*2+1)*i >= a){
      printf("%d", i);
      break;
    }
  }
}


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

#include <iostream>

using namespace std;

int main()
{
  int n,d,num=1,sam;
  cin>>n;
  cin>>d;
  sam=2d+1;
  while(n>sam)
  {
    num++;
    sam+=2*d+1;
  }
  cout<<num;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:7: error: unable to find numeric literal operator 'operator""d'
   10 |   sam=2d+1;
      |       ^~
Language: C++

#include <iostream>

using namespace std;

int main()
{
  int n,d,num=1,sam;
  cin>>n>>d;
  sam=2d+1;
  while(n>sam)
  {
    num++;
    sam+=2d+1;
  }
  cout<<num;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: unable to find numeric literal operator 'operator""d'
    9 |   sam=2d+1;
      |       ^~
a.cc:13:10: error: unable to find numeric literal operator 'operator""d'
   13 |     sam+=2d+1;
      |          ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
     
int n,d;
cin >> n >> d;
int ans = (n+1)/(2*d);
cout << ans <<endl;

Compiler output:
a.cc:5:1: error: 'cin' does not name a type
    5 | cin >> n >> d;
      | ^~~
a.cc:7:1: error: 'cout' does not name a type
    7 | cout << ans <<endl;
      | ^~~~
Language: C

#include <stdio.h>
int main(){
int N,D,s,result;
scanf("%d %d",&N,&D);
s=(2*s+1);
N/=(float)u;
if(N==(int)N)
result++;
else
N/=(int)u;
reault+=1;
{printf("%d",result);
}
}

Compiler output:
main.c: In function 'main':
main.c:6:11: error: 'u' undeclared (first use in this function)
    6 | N/=(float)u;
      |           ^
main.c:6:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:11:1: error: 'reault' undeclared (first use in this function); did you mean 'result'?
   11 | reault+=1;
      | ^~~~~~
      | result
Language: C++

#include <iostream>
 
int main(){
  int n,d;
  std::cin >> n >>d;
  int a = n/(d*2+1);
  if(n%(d*2+1){
    std::cout << a+1 << std::endl;
  }else{
    std::cout << a << std::endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:15: error: expected ')' before '{' token
    7 |   if(n%(d*2+1){
      |     ~         ^
      |               )
a.cc:12:1: error: expected primary-expression before '}' token
   12 | }
      | ^
Language: Java

import java.util.*; public class Main{ public static void main(String[] args){ Scanner s=new Scanner(System.in); int N=s.nextInt(); int D=s.nextInt(); int check=N/D; int ans=0; if(N<=2*D+1){ System.out.print(1); } else{
System.out.print(N/(2*D+1)) } } } 


Compiler output:
Main.java:2: error: ';' expected
System.out.print(N/(2*D+1)) } } } 
                           ^
1 error
Language: C++

#include <iostream>

int main(){
  int n,d;
  std::cin >> n >>d;
  int a = n/(d*2+1);
  if(a){
    std::cout << a+1 << std::endl;
  }else{
    std::cout << a << std::endl;
  }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:4: error: expected '}' at end of input
   11 |   }
      |    ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,m,l,g;
  cin >> n >> m;
  g=2m+1;
  l=n/g;
  if(n%g!=0)l++;
  cout << l << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: unable to find numeric literal operator 'operator""m'
    6 |   g=2m+1;
      |     ^~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,m,l;
  cin >> n >> m;
  l=n/(2m+1);
  if(n%(2m+1)!=0)l++;
  cout << l << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:8: error: unable to find numeric literal operator 'operator""m'
    6 |   l=n/(2m+1);
      |        ^~
a.cc:7:9: error: unable to find numeric literal operator 'operator""m'
    7 |   if(n%(2m+1)!=0)l++;
      |         ^~
Language: C++

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

int n,d;
cin >> n >> d;
int ans = (n+1)/(2*d);
cout << ans <<endl;


Compiler output:
a.cc:5:1: error: 'cin' does not name a type
    5 | cin >> n >> d;
      | ^~~
a.cc:7:1: error: 'cout' does not name a type
    7 | cout << ans <<endl;
      | ^~~~
Language: Java

import java.util.Scanner;
 
public class Main { //クラス名はMain
    public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String n = scan.next();
    String d = scan.next();
    int N = Integer.parseInt(n);
    int D = Integer.parseInt(d);
    
    int ans = (N + 2*D) / (2*D +1)
    
    System.out.println(ans);
 
 
    }
}

Compiler output:
Main.java:11: error: ';' expected
    int ans = (N + 2*D) / (2*D +1)
                                  ^
1 error
Language: C++

#include <iostream>
using namespace std;

int main() {
	// your code goes here
	int n,d;
	cin>>n>>d;
	cout<<ceil(n/(2*d+1));
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: 'ceil' was not declared in this scope
    8 |         cout<<ceil(n/(2*d+1));
      |               ^~~~
Language: C++

#include <iostream>
using namespace std;

int main() {
	// your code goes here
	int n,d;
	cin>>n>>d;
	cout<<ceil(n/(2*d));
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: 'ceil' was not declared in this scope
    8 |         cout<<ceil(n/(2*d));
      |               ^~~~
Language: C++

int N;
int D;
int a,b;

int main() {
    cin >> N >> D;
    a = 1 + D;
    b = N - D;
    int sum = b - a;
    int interval = 2 * D + 1;
  	int counter = 2;
  	int c = a + interval;
  
  	while(c < b) {
       counter += 1;
       c += interval;
    }
    cout << counter;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope
    6 |     cin >> N >> D;
      |     ^~~
a.cc:18:5: error: 'cout' was not declared in this scope
   18 |     cout << counter;
      |     ^~~~
Language: C++

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

int main() {
  int n, d;
  cin >> n >> d;
  cout << math.ceil(n/(2*d)) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:11: error: 'math' was not declared in this scope
    7 |   cout << math.ceil(n/(2*d)) << endl;
      |           ^~~~
Language: C

#include <stdio.h>
int main(){
int N,D,s,u;
scanf("%d %d",&N,&D);
if((D>=1&&D<=20)&&(N>=1&&N<=20))
s=(1+D);
u=(2*s-1);
N/=(float)u;
else continue;
if(N==(int)N)
N=N;
else
N/=(int)u;
N+=1.0;
{printf("%d",(int)N);
}
}

Compiler output:
main.c: In function 'main':
main.c:9:1: error: 'else' without a previous 'if'
    9 | else continue;
      | ^~~~
main.c:9:6: error: continue statement not within a loop
    9 | else continue;
      |      ^~~~~~~~
Language: C++

#include <stdio.h>
int main ()
{
    int n , d , nm , fd ,mb;
    scanf("%d %d" , &n , &d);
    nm = (d * d) + 1;
    fd = n / nm;
    if (n % nm != 0) {
        mb = fd + 1;
        printf ("%d" , mb);
    }
    else (n % nm == 0) {
        printf ("%d" , fd);
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:23: error: expected ';' before '{' token
   12 |     else (n % nm == 0) {
      |                       ^~
      |                       ;
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main()
{
int N , D , K;
cin >> N;
cin >> D;
K = 2*D+1
if(N%K==0){
cout << N/K << endl;
}
else{
cout << N/K+1 << endl;
}
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:10: error: expected ';' before 'if'
    9 | K = 2*D+1
      |          ^
      |          ;
   10 | if(N%K==0){
      | ~~        
a.cc:13:1: error: 'else' without a previous 'if'
   13 | else{
      | ^~~~
Language: Java

java.util.*;
public class Main{
public static void main(String[] args){
Scanner s=new Scanner(System.in);
        int N=s.nextInt();
        int D=s.nextInt();
        int check=N/D;
        int ans=0;
        if(N<=2*D+1){
        System.out.print(1);
        }
        else{
        if(check%2!=0){
        ans=check/2+1;
        }
        else{
        ans=check/2;
        }
if(N%D!=0){
ans+=1;
}

System.out.print(ans);
        }

}
}


Compiler output:
Main.java:1: error: class, interface, enum, or record expected
java.util.*;
^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main()
{
int N , D , K;
cin >> N;
cin >> D;
K = 2*D+1
if(N%K==0){
cout << N\K << endl;
}
else{
cout << N\K+1 << endl;
}
return 0;
}


Compiler output:
a.cc:11:10: error: stray '\' in program
   11 | cout << N\K << endl;
      |          ^
a.cc:14:10: error: stray '\' in program
   14 | cout << N\K+1 << endl;
      |          ^
a.cc: In function 'int main()':
a.cc:9:10: error: expected ';' before 'if'
    9 | K = 2*D+1
      |          ^
      |          ;
   10 | if(N%K==0){
      | ~~        
a.cc:13:1: error: 'else' without a previous 'if'
   13 | else{
      | ^~~~
a.cc:14:10: error: expected ';' before 'K'
   14 | cout << N\K+1 << endl;
      |          ^~
      |          ;
Language: Java

import java.util.*;
class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int N = sc.nextInt();
int D = sc.nextint();
int s = D+D+1;
int p = N % D;
int f = N - p;
System.out.println(f/D);
}
}

Compiler output:
Main.java:6: error: cannot find symbol
int D = sc.nextint();
          ^
  symbol:   method nextint()
  location: variable sc of type Scanner
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main(){
    int n, d, e;
    cin >> n >> d;
    int ans = 1;
    for(int i = 0; i < n; i++) {
        if (n <= d) break;
        e = d + 1 + d;
        if (e >= n) {
            break;
        }
        else ans++;
        d = e;
    }
    cout << ans << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:17:25: error: expected '}' at end of input
   17 |     cout << ans << endl;
      |                         ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int N,D;
  cin>>N>>D;
  int i;
  cin>>i;
  int i+D=A;
  cin>>A;
  if(A<=N)
    cout<<A;
  else
    break;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:8: error: expected initializer before '+' token
    9 |   int i+D=A;
      |        ^
a.cc:10:8: error: 'A' was not declared in this scope
   10 |   cin>>A;
      |        ^
a.cc:14:5: error: break statement not within loop or switch
   14 |     break;
      |     ^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
  int n,d,ans;
  cin>>n>>d;
  d=2*d+1;
  ans=(n+a-1)/a;
  cout<<ans;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: error: 'a' was not declared in this scope
    8 |   ans=(n+a-1)/a;
      |          ^
Language: C++

#include<bits/stdc++.h>
using namespace std
  
  int main(){
  int r,an,s;
  cin>>r>>an;
  s = 2*an +1;
 if(r%s)
   cout<<r/s;
  else

  cout<<(r/s)+1;
  return 0;
  }


Compiler output:
a.cc:2:20: error: expected ';' before 'int'
    2 | using namespace std
      |                    ^
      |                    ;
    3 | 
    4 |   int main(){
      |   ~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main{
  int n,d;
  cin>>n>>d;
  int temp = 2*d+1;
  if(n%temp)cout<<n/temp+1;
  else
    cout<<cout<<n/temp;
}

Compiler output:
a.cc:3:5: error: cannot declare '::main' to be a global variable
    3 | int main{
      |     ^~~~
a.cc:4:3: error: expected primary-expression before 'int'
    4 |   int n,d;
      |   ^~~
a.cc:4:3: error: expected '}' before 'int'
a.cc:3:9: note: to match this '{'
    3 | int main{
      |         ^
a.cc:5:3: error: 'cin' does not name a type
    5 |   cin>>n>>d;
      |   ^~~
a.cc:6:16: error: 'd' was not declared in this scope
    6 |   int temp = 2*d+1;
      |                ^
a.cc:7:3: error: expected unqualified-id before 'if'
    7 |   if(n%temp)cout<<n/temp+1;
      |   ^~
a.cc:8:3: error: expected unqualified-id before 'else'
    8 |   else
      |   ^~~~
a.cc:10:1: error: expected declaration before '}' token
   10 | }
      | ^
Language: C++

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

int main() {
  int a, b;
  cin >> a >> b;
  cout << ceil(a / (b*2+1)) << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:7:37: error: expected '}' at end of input
    7 |   cout << ceil(a / (b*2+1)) << endl;
      |                                     ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

#include<bits/stdc++.h>
using namespace std
  
  int main(){
  int r,an,s;
  cin>>r>>an;
  s = 2*an +1;
  cout<<(r/s)+1;
  return 0;
  }


Compiler output:
a.cc:2:20: error: expected ';' before 'int'
    2 | using namespace std
      |                    ^
      |                    ;
    3 | 
    4 |   int main(){
      |   ~~~
Language: C++

#include <iostream>
using namespace std;
 
int main( void ) {
  int n, d;
  cin >> n >> d;
  
  for( int i = 1; d*2 < n; i++ ) {
    d = d*2;
  }
  
  cout << i;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:11: error: 'i' was not declared in this scope
   12 |   cout << i;
      |           ^
Language: C++

#include <iostream>
using namespace std;

int main( void ) {
  int n. d;
  cin >> n >> d;
  
  for( int i = 1; d*2 < n; i++ ) {
    d = d*2;
  }
  
  cout << i;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: expected initializer before '.' token
    5 |   int n. d;
      |        ^
a.cc:6:10: error: 'n' was not declared in this scope
    6 |   cin >> n >> d;
      |          ^
a.cc:6:15: error: 'd' was not declared in this scope
    6 |   cin >> n >> d;
      |               ^
a.cc:12:11: error: 'i' was not declared in this scope
   12 |   cout << i;
      |           ^
Language: C

	#include<bits/stdc++.h>
	using namespace std;
	long long  n , d;
	long long  ans;
	int main () {
		scanf("%lld%lld" ,&n , &d);
		d = d + d;
		if(n % d != 0){
			ans = n / d + 1; 
		}else{
			ans = n / d;
		}
		cout << ans << endl;
	}

Compiler output:
main.c:1:17: fatal error: bits/stdc++.h: No such file or directory
    1 |         #include<bits/stdc++.h>
      |                 ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
using namespace std;

int main() {
	int >> N >> D;
	cin >> N >> D;
	int c = 2 * D + 1;
	if (N % c == 0)cout << (N / c) << endl;
	else cout << (N / c) + 1 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:13: error: expected unqualified-id before '>>' token
    5 |         int >> N >> D;
      |             ^~
a.cc:6:16: error: 'N' was not declared in this scope
    6 |         cin >> N >> D;
      |                ^
a.cc:6:21: error: 'D' was not declared in this scope
    6 |         cin >> N >> D;
      |                     ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,d;
  cin>>n>>d;
  if(n==1||n==2)
    cout<<"1\n";
  else
  cout<<ceil(n/(2*d+1)<<"\n";
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:23: error: invalid operands of types 'int' and 'const char [2]' to binary 'operator<<'
   10 |   cout<<ceil(n/(2*d+1)<<"\n";
      |              ~~~~~~~~~^~~~~~
      |               |         |
      |               int       const char [2]
Language: C++

#include<iostream>
using namespace std;

int main() {
	int >> N >> D;
	cin >> N >> D;
	int c = 2 * D + 1;
	if (N % c == 0)cout << (N / c) << endl;
	else cout << (N / c + 1) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:13: error: expected unqualified-id before '>>' token
    5 |         int >> N >> D;
      |             ^~
a.cc:6:16: error: 'N' was not declared in this scope
    6 |         cin >> N >> D;
      |                ^
a.cc:6:21: error: 'D' was not declared in this scope
    6 |         cin >> N >> D;
      |                     ^
Language: C

#include <stdio.h>
#include <math.h>

int main(){
  int n,d;
  scanf("%d%d",&n,&d);
  double result = n / (d*2+1);
  printf("%d",(int)ceil(result));
  
  retrun 0;
}


Compiler output:
main.c: In function 'main':
main.c:10:3: error: 'retrun' undeclared (first use in this function)
   10 |   retrun 0;
      |   ^~~~~~
main.c:10:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:10:9: error: expected ';' before numeric constant
   10 |   retrun 0;
      |         ^~
      |         ;
Language: C

#include <stdio.h>

int main(){
  int n,d;
  scanf("%d%d",&n,&d);
  double result = n / (d*2+1);
  printf("%d",(int)ceil(result));
  
  retrun 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:20: error: implicit declaration of function 'ceil' [-Wimplicit-function-declaration]
    7 |   printf("%d",(int)ceil(result));
      |                    ^~~~
main.c:2:1: note: include '<math.h>' or provide a declaration of 'ceil'
    1 | #include <stdio.h>
  +++ |+#include <math.h>
    2 | 
main.c:7:20: warning: incompatible implicit declaration of built-in function 'ceil' [-Wbuiltin-declaration-mismatch]
    7 |   printf("%d",(int)ceil(result));
      |                    ^~~~
main.c:7:20: note: include '<math.h>' or provide a declaration of 'ceil'
main.c:9:3: error: 'retrun' undeclared (first use in this function)
    9 |   retrun 0;
      |   ^~~~~~
main.c:9:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:9: error: expected ';' before numeric constant
    9 |   retrun 0;
      |         ^~
      |         ;
Language: C++

#include<iostream>
using namespace std;

int main() {
	int >> N >> D;
	cin >> N >> D;
	int c = 2 * D + 1;
	if (N % c == 0)cout << N / c << endl;
	else cout << N / c + 1 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:13: error: expected unqualified-id before '>>' token
    5 |         int >> N >> D;
      |             ^~
a.cc:6:16: error: 'N' was not declared in this scope
    6 |         cin >> N >> D;
      |                ^
a.cc:6:21: error: 'D' was not declared in this scope
    6 |         cin >> N >> D;
      |                     ^
Language: C

#include<stdio.h>
int main(void){
	int n,d,x=0,i,y;
	scanf("%d %d",&n,&d);
	for(i=1;i<=n;i++){
		if(i-d>=y){
			i+=d-1;
			x+=1;
			y+=i+1
		}
	}
	printf("%d",x);
}

Compiler output:
main.c: In function 'main':
main.c:9:31: error: expected ';' before '}' token
    9 |                         y+=i+1
      |                               ^
      |                               ;
   10 |                 }
      |                 ~
Language: C++

include<bits/stdc++.h>
using namespace std;
int main()
{
  int n,d;
  cin>>n>>d;
  if(n==1||n==2)
    cout<<"1\n";
  else
  cout<<ceil(n/(2*d+1)<<"\n";
  return 0;
}

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>>n>>d;
      |   ^~~
a.cc:8:5: error: 'cout' was not declared in this scope
    8 |     cout<<"1\n";
      |     ^~~~
a.cc:10:3: error: 'cout' was not declared in this scope
   10 |   cout<<ceil(n/(2*d+1)<<"\n";
      |   ^~~~
a.cc:10:23: error: invalid operands of types 'int' and 'const char [2]' to binary 'operator<<'
   10 |   cout<<ceil(n/(2*d+1)<<"\n";
      |              ~~~~~~~~~^~~~~~
      |               |         |
      |               int       const char [2]
Language: C

#include<stdio.h>
int main(void){
	int n,d,x=0,i,y,s[1000];
	scanf("%d %d",&n,&d);
	for(i=1;i<=n;i++){
		if(i-d>=y){
			i+=d-1;
			x+=1;
			y+=i+1
		}
	}
	printf("%d",x);
}

Compiler output:
main.c: In function 'main':
main.c:9:31: error: expected ';' before '}' token
    9 |                         y+=i+1
      |                               ^
      |                               ;
   10 |                 }
      |                 ~
Language: C

#include <stdio.h>
int main(){
int N,D,s,u;
scanf("%d %d",&N,&D);
if((D>=1&&D<=20)&&(N>=1&&N<=20))
s=(1+D);
u=(2*s-1);
N/=(float)u;
if(N==(int)N)
N=N;
else
(int)N/=u;
N+=1;
{printf("%d",(int)N);
}
}

Compiler output:
main.c: In function 'main':
main.c:12:7: error: lvalue required as left operand of assignment
   12 | (int)N/=u;
      |       ^~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  cin>>n>>d;
  if(n==1||n==2)
    cout<<"1\n";
  else
  cout<<ceil(n/(2*d+1)<<"\n";
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: 'n' was not declared in this scope; did you mean 'yn'?
    5 |   cin>>n>>d;
      |        ^
      |        yn
a.cc:5:11: error: 'd' was not declared in this scope
    5 |   cin>>n>>d;
      |           ^
Language: Java

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

class Main {
  public static void main(String[] args){
    Scanner  sc = new Scanner(System.in);
    int n = sc.nextInt();
    int d = sc.nextInt();
    int a,i = 0;
    while(a < n){
      a += 2 * d + 1;
      i ++;
          }
          System.out.println(i);
  }
}


Compiler output:
Main.java:10: error: variable a might not have been initialized
    while(a < n){
          ^
1 error
Language: C++

#include<iostream>
using namespace std;

int main() {
	int >> N >> D;
	cin >> N >> D;
	if (N % (2 * D + 1) == 0)cout << N / (2 * D + 1) << endl;
	else cout << N / (2 * D + 1) + 1 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:13: error: expected unqualified-id before '>>' token
    5 |         int >> N >> D;
      |             ^~
a.cc:6:16: error: 'N' was not declared in this scope
    6 |         cin >> N >> D;
      |                ^
a.cc:6:21: error: 'D' was not declared in this scope
    6 |         cin >> N >> D;
      |                     ^
Language: Java

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

class Main {
  public static void main(String[] args){
    Scanner  sc = new Scanner(System.in());
    int n = sc.nextInt();
    int d = sc.nextInt();
    int a,i = 0;
    while(a < n){
      a += 2 * d + 1;
      i ++;
          }
          System.out.println(i);
  }
}


Compiler output:
Main.java:6: error: cannot find symbol
    Scanner  sc = new Scanner(System.in());
                                    ^
  symbol:   method in()
  location: class System
1 error
Language: C++

include<iostream>
using namespace std;
int main(){
int n,d;
cin >> n >> d;

cout << n/(2*d+1)+1 << endl;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<iostream>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:5:1: error: 'cin' was not declared in this scope
    5 | cin >> n >> d;
      | ^~~
a.cc:7:1: error: 'cout' was not declared in this scope
    7 | cout << n/(2*d+1)+1 << endl;
      | ^~~~
a.cc:7:24: error: 'endl' was not declared in this scope
    7 | cout << n/(2*d+1)+1 << endl;
      |                        ^~~~
Language: C++

#include <iostream>
using namespace std;
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  int N D;
  cin >> N;
  cin >> D;
  int range = 2*D + 1;
  
  cout << (N + (range-1)) / range << "\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: expected initializer before 'D'
    6 |   int N D;
      |         ^
a.cc:7:10: error: 'N' was not declared in this scope
    7 |   cin >> N;
      |          ^
a.cc:8:10: error: 'D' was not declared in this scope
    8 |   cin >> D;
      |          ^
Language: C++

#include <stdio.h>

int main(void){
  int n,d;
  scanf("%d %d",n,d);
  int m = n/(2d+1);
  if(n%(2d+1)!=0)m++;
  printf("%d",m);
  return 0
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:14: error: unable to find numeric literal operator 'operator""d'
    6 |   int m = n/(2d+1);
      |              ^~
a.cc:7:9: error: unable to find numeric literal operator 'operator""d'
    7 |   if(n%(2d+1)!=0)m++;
      |         ^~
a.cc:9:11: error: expected ';' before '}' token
    9 |   return 0
      |           ^
      |           ;
   10 | }
      | ~
Language: Java

import java.util.*;

class b {
  public static void main(String[] args){
    Scanner  sc = new Scanner(System.in());
    int n = sc.nextInt();
    int d = sc.nextInt();
    int a,i = 0;
    while(a < n){
      a += 2 * d + 1;
      i ++;
          }
          System.out.println(i);
  }
}


Compiler output:
Main.java:5: error: cannot find symbol
    Scanner  sc = new Scanner(System.in());
                                    ^
  symbol:   method in()
  location: class System
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
  int x,y;
  cin>.x>>y;
  y=y*2+1;
  if(x%y==0)
    cout<<x/y;
  else
    cout<<x/y+1;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:7: error: expected primary-expression before '.' token
    6 |   cin>.x>>y;
      |       ^
Language: C

#include <stdio.h>

int main() {
  int N, D;
  int i;
  int ans;
  
  scanf("%d %d", &N, &D);
  
  for (i = 0; N > 0; ans++) {
    N -= (2 * D + 1) 
  }
  
  printf("%d", ans);
}

Compiler output:
main.c: In function 'main':
main.c:11:21: error: expected ';' before '}' token
   11 |     N -= (2 * D + 1)
      |                     ^
      |                     ;
   12 |   }
      |   ~
Language: C++

using namespace std;

int main() {
	int n, d;
	cin >> n >> d;
	int ans = 0;
	if (n%(d*2+1) == 0) ans = n/(d*2+1);
	else ans = n/(d*2+1)+1;
	cout << ans << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope
    5 |         cin >> n >> d;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:9:9: error: 'cout' was not declared in this scope
    9 |         cout << ans << endl;
      |         ^~~~
a.cc:9:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:9:24: error: 'endl' was not declared in this scope
    9 |         cout << ans << endl;
      |                        ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C++

using namespace std;

int main() {
	int n, d;
	cin >> n >> d;
	int ans = 0;
	if (n%(d*2+1) == 0) ans = n/((d*2)+1);
	else ans = n/(d*2+1)+1;
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope
    5 |         cin >> n >> d;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:9:9: error: 'cout' was not declared in this scope
    9 |         cout << ans << endl;
      |         ^~~~
a.cc:9:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:9:24: error: 'endl' was not declared in this scope
    9 |         cout << ans << endl;
      |                        ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C

#include<stdio.h>

int main(){
  int D,N;
  
  scanf("%d%d",&N,&D);
  
  int i=N/2*D;
  
  if(N%D != 0;)i++;
  
  printf("%d",i);
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:14: error: expected ')' before ';' token
   10 |   if(N%D != 0;)i++;
      |     ~        ^
      |              )
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
  int N, D;
  cin >> N >> D;  
  if (D != 0 && 2 * D < N){
    cout << (N - (2 * D) )/D;
  }
  else{
    cout << "error"; 
  {
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:2: error: expected '}' at end of input
   12 | }
      |  ^
a.cc:9:7: note: to match this '{'
    9 |   else{
      |       ^
a.cc:12:2: error: expected '}' at end of input
   12 | }
      |  ^
a.cc:3:12: note: to match this '{'
    3 | int main() {
      |            ^
Language: C

#include <stdio.h>
int main(){
int N,D,s,u;
scanf("%d %d",&N,&D);
if((D>=1&&D<=20)&&(N>=1&&N<=20))
s=(1+D);
u=(2*s-1);
if(N%U==0)
N=N;
else
N/=u;
N+=1;
printf("%d",N);
}

Compiler output:
main.c: In function 'main':
main.c:8:6: error: 'U' undeclared (first use in this function)
    8 | if(N%U==0)
      |      ^
main.c:8:6: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(){
	int n,d,range;
	
	scanf("%d%d",&n,&d);
	range=d*2+1;

	if(n%range=0) printf("%d",n/range);
	else printf("%d",n/range+1);



return 0;
}


Compiler output:
main.c: In function 'main':
main.c:9:19: error: lvalue required as left operand of assignment
    9 |         if(n%range=0) printf("%d",n/range);
      |                   ^
Language: C++




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

int main(){
   	int n,d, count=0;
	cin>>n,d;
	int t=2d+1;
	for(int i=0; i<n; i+=t){
		count++;

	}
	cout<<count;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:15: error: unable to find numeric literal operator 'operator""d'
   10 |         int t=2d+1;
      |               ^~
Language: C++

#include<stdio.h>

int main()
  {
     int n,d;
     scanf("%d %d",&n,&d);
     int x=n/d;
      

Compiler output:
a.cc: In function 'int main()':
a.cc:7:16: error: expected '}' at end of input
    7 |      int x=n/d;
      |                ^
a.cc:4:3: note: to match this '{'
    4 |   {
      |   ^
Language: C++

include <iostream>
using namespace std;
int main(void){
    //入力
    int n,d,ans;
    cin >> n >> d;
    ans=n/(2*d+1)+1;
    if(n%(2*d+1)==0){
        ans-=1;
    }
    cout << ans << endl;
    return 0;
    
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <iostream>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope
    6 |     cin >> n >> d;
      |     ^~~
a.cc:11:5: error: 'cout' was not declared in this scope
   11 |     cout << ans << endl;
      |     ^~~~
a.cc:11:20: error: 'endl' was not declared in this scope
   11 |     cout << ans << endl;
      |                    ^~~~
Language: C++

#include <iostream>
#include <string>
using namespace std;
 
int main(){
  int N,D;
  cin >> N >> D;
  int k = N / (2*D + 1);
  int l = floor((N % (2*D + 1)) / (2*D + 1));
  cout << k+l << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: 'floor' was not declared in this scope
    9 |   int l = floor((N % (2*D + 1)) / (2*D + 1));
      |           ^~~~~
Language: C++




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

int main(){
   	int n,d, count=0,t;
	cin>>n,d;
	int t=2d+1;
	for(int i=0; i<n; i+=t){
		count++;

	}
	cout<<count;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: redeclaration of 'int t'
   10 |         int t=2d+1;
      |             ^
a.cc:8:26: note: 'int t' previously declared here
    8 |         int n,d, count=0,t;
      |                          ^
a.cc:10:15: error: unable to find numeric literal operator 'operator""d'
   10 |         int t=2d+1;
      |               ^~
Language: Java

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int D = sc.nextInt();
        int cnt = 0;
        for (int i = 0; i < N; i++) {
            if (i - D > 0) {
                cnt++;
                i = i + D;
                if (i > N ){
                    break;
                }
            }
        }
        System.out.println(cnt);
    }
}

Compiler output:
Main.java:3: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:3: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
 
int main(){
  int N,D,a,b,c,d,e;
  cin>>N>>D;
  a=2*D;
  b=1+a;
  c=N/b;
  d=N%b;
  e=c+1;
  if(d==0){
    cout<<c;
  }else{
    cout<<e;
return 0;
  }

Compiler output:
a.cc: In function 'int main()':
a.cc:18:4: error: expected '}' at end of input
   18 |   }
      |    ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C

#include<stdio.h>
int main(){
  int a[3];
  int b;
  int c;
  scanf("%d",&a[0]);
  scanf("%d",&a[1]);
  b = a[0]/(2*a[1]+1);
  c = a[0]%b
  if(c == 0){
    printf("%d",b);
  }else{
    printf("%d",b+1);
  }
}

Compiler output:
main.c: In function 'main':
main.c:9:13: error: expected ';' before 'if'
    9 |   c = a[0]%b
      |             ^
      |             ;
   10 |   if(c == 0){
      |   ~~
Language: C

#include <stdio.h>
int main(){
int N,D,s,u;
scanf("%d %d",&N&D);
if((D>=1&&D<=20)&&(N>=1&&N<=20))
s=(1+D);
u=(2*s-1);
N/=u;
N+=1;
printf("%d",N);
}


Compiler output:
main.c: In function 'main':
main.c:4:17: error: invalid operands to binary & (have 'int *' and 'int')
    4 | scanf("%d %d",&N&D);
      |               ~~^
      |               |
      |               int *
Language: C++

#include<iostream>
#include<stdio.h>
#include<math.h>
#include<algorithm>
#include<vector>
#include<cstdlib>
#include<map>
#include<fstream>
#include<string>
#include<sstream>
#include<iomanip>
#include<stdio.h>
using namespace std;
 
int main() {
	int n,d;
	cin >> n>>d;
  if(n/(2*d+1)==0)
	cout << n/(2*d+1) << endl;
  else
    cout<<n/(2*d+1)+1<<endl
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:28: error: expected ';' before '}' token
   21 |     cout<<n/(2*d+1)+1<<endl
      |                            ^
      |                            ;
   22 | }
      | ~
Language: C

#include<stdio.h>
int main(){
        int n,d,a,b,c=0,e;

    scanf("%d %d",&n,&d);
    while(b<0){
        b=N-2*d+1;
        c++;
    }
    printf("%d",c);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:11: error: 'N' undeclared (first use in this function)
    7 |         b=N-2*d+1;
      |           ^
main.c:7:11: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <iostrea,>

using namespace std;

int main(void){
  int N, D;
  
  cin >> N >> D;
  
  if(N < D) cout << 1 << endl;
  
  else cout << N / (D * 2 + 1) << endl;
}

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

#include <iostream>

using namespace std;

int main(void){
  
  int N, D;
  cin >> N >> D;
  
  int hon = 2 * D +1;
  int val;
  
  if (N % hon == 0){
    val = N/hon}
  else{int rem;
       rem = int(N/hon);
       val = rem + 1;}
  
  cout << val << endl;
  
  return 0
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:16: error: expected ';' before '}' token
   14 |     val = N/hon}
      |                ^
      |                ;
a.cc:21:11: error: expected ';' before '}' token
   21 |   return 0
      |           ^
      |           ;
   22 | }
      | ~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int n,d;
  cin>>n>>d;
  if((n%((2*d)+1)==0)
     {
       cout<<n/((2*d)+1);
     }
     else
     {
       cout<<(n/((2*d)+1))+1;
     }
     return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:22: error: expected ';' before '{' token
    7 |   if((n%((2*d)+1)==0)
      |                      ^
      |                      ;
    8 |      {
      |      ~                
a.cc:11:6: error: expected primary-expression before 'else'
   11 |      else
      |      ^~~~
a.cc:10:7: error: expected ')' before 'else'
   10 |      }
      |       ^
      |       )
   11 |      else
      |      ~~~~
a.cc:7:5: note: to match this '('
    7 |   if((n%((2*d)+1)==0)
      |     ^
Language: C

#include <stdio.h>

int main(void) {
  int n, d, can, people;
  scanf("%d %d", &n, &d);
  can = 2*i + 1;  //１人で監視できる本数
  if (n%can==0) {
    people = n / can;
  } else {
    people = n / can + 1;
  }
  printf("%d\n", people);

  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:6:11: error: 'i' undeclared (first use in this function)
    6 |   can = 2*i + 1;  //１人で監視できる本数
      |           ^
main.c:6:11: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include<iostream>
#include<stdio.h>
#include<math.h>
#include<algorithm>
#include<vector>
#include<cstdlib>
#include<map>
#include<fstream>
#include<string>
#include<sstream>
#include<iomanip>
#include<stdio.h>
using namespace std;

int main() {
	int n,d;
	cin >> n>>d;
  if(n/(2*d+1))
	cout << n/(2*d+1) << endl;
  else
    cout<<n/(2*d+1)+1<<endl
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:28: error: expected ';' before '}' token
   21 |     cout<<n/(2*d+1)+1<<endl
      |                            ^
      |                            ;
   22 | }
      | ~
Language: C++

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

int main() {
  int N,d;
  cin>>N>>d;
  int a,b;
  a=N+1;
  b=2d+1;
  if (a%b==0){
      cout<<a/b<<endl;
  }
else {
      cout<<a/b+1<<endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: unable to find numeric literal operator 'operator""d'
    9 |   b=2d+1;
      |     ^~
Language: C++

#include<iostream>
using namespace std;
int main(){
int a,b,c,d ;
cin>>a>>b;
c=b+b+1
  if(a%c==0){cout<<a/c;}
  else cout<<a/c+1;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:8: error: expected ';' before 'if'
    6 | c=b+b+1
      |        ^
      |        ;
    7 |   if(a%c==0){cout<<a/c;}
      |   ~~    
a.cc:8:3: error: 'else' without a previous 'if'
    8 |   else cout<<a/c+1;
      |   ^~~~
Language: C

#include <stdio.h>
int main(){
int N,D,s,u,i;
if((D>=1&&D<=20)&&(N>=1&&N<=20))
do{
scanf("%d %d\n",&N,&D);
s=1+D;
u=(2*s-1);
i=N/u;
i+=1;
printf("%d",i);
}
else
break;
}

Compiler output:
main.c: In function 'main':
main.c:13:1: error: expected 'while' before 'else'
   13 | else
      | ^~~~
Language: C++

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

int main() {
  int N,d;
  cin>>N>>d;
  int a,b;
  a=N+1;
  b=2d+1;
  if (a%b==0){
      cout<<a/b<<endl;
  }
else {
      cout<<a/b+1<<endl;
  }
}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: unable to find numeric literal operator 'operator""d'
    9 |   b=2d+1;
      |     ^~
a.cc: At global scope:
a.cc:17:1: error: expected declaration before '}' token
   17 | }
      | ^
Language: Java

import java.util.Scanner;
class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();//14
	int d = sc.nextInt();//3
    int result = 0;
    
    for(int i = 0;i < n;i++){
      if(3*d*i > n & count == 0){
        result = i;
        break;
      }
    }
    System.out.println(result);
  }
}

Compiler output:
Main.java:10: error: cannot find symbol
      if(3*d*i > n & count == 0){
                     ^
  symbol:   variable count
  location: class Main
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,m;
	cin>>n>>m;
	cout<<(n+2*m)/(2*m+1));
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:30: error: expected ';' before ')' token
    6 |         cout<<(n+2*m)/(2*m+1));
      |                              ^
      |                              ;
Language: C++

#include <iostream>
using namespace std;
int main()
{
  int n,d,cnt=0;
  cin>>n>>d;
  d=2*d;
  if(d>=n){cout<<0;return 0;}
  while(d<n)
  {
    d+=d+1;
    if(d>=n)break;
    else continue; 
    cnt++;
    
  }
  cout<<cnt;

Compiler output:
a.cc: In function 'int main()':
a.cc:17:13: error: expected '}' at end of input
   17 |   cout<<cnt;
      |             ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: Java

public class Main {
	public static void main(String[] args) {
		 Scanner scan = new Scanner(System.in);
	        int N  = scan.nextInt();
	        int D  = scan.nextInt();
	        int i=0;
	        int x =  N;

	        for(i=0; x > 0;i++) {
	        	x -= 2*D+1;
	        }
	        System.out.println(String.valueOf(i ));
	}
}


Compiler output:
Main.java:3: error: cannot find symbol
		 Scanner scan = new Scanner(System.in);
		 ^
  symbol:   class Scanner
  location: class Main
Main.java:3: error: cannot find symbol
		 Scanner scan = new Scanner(System.in);
		                    ^
  symbol:   class Scanner
  location: class Main
2 errors