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

#include<iostream>

int main()
{
  int n;
  cin>>n;
  int count=0;
  int i=0;
  for(i=1;i<=n;i++)
  {
    if(i%2!=0)
      count+=1;
  }
  double p=count/n;
  cout<<"/n"<<p;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin>>n;
      |   ^~~
      |   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:15:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |   cout<<"/n"<<p;
      |   ^~~~
      |   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<iostream.h>

int main()
{
  int n;
  cin>>n;
  int count=0;
  int i=0;
  for(i=1;i<=n;i++)
  {
    if(i%2!=0)
      count+=1;
  }
  double p=count/n;
  cout<<"/n"<<p;
  return 0;
}

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

#include<iostream>

void main()
{
  int n;
  cin>>n;
  int count=0;
  int i=0;
  for(i=1;i<=n;i++)
  {
    if(i%2!=0)
      count+=1;
  }
  double p=count/n;
  cout<<"/n"<<p;
}

Compiler output:
a.cc:3:1: error: '::main' must return 'int'
    3 | void main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin>>n;
      |   ^~~
      |   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:15:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |   cout<<"/n"<<p;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

void main()
{
  int n;
  cin>>n;
  int count=0;
  int i=0;
  for(i=1;i<=n;i++)
  {
    if(i%2!=0)
      count+=1;
  }
  double p=count/n;
  cout<<"/n"<<p;
}

Compiler output:
a.cc:1:1: error: '::main' must return 'int'
    1 | void main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope
    4 |   cin>>n;
      |   ^~~
a.cc:13:3: error: 'cout' was not declared in this scope; did you mean 'count'?
   13 |   cout<<"/n"<<p;
      |   ^~~~
      |   count
Language: C++

    #include <iostream>
    using namespace std;
     
    int main () {
     	int n;
      cin >> n;
    	int odd = (n&1) ? n/2+1 : n/2;
      cout << fixed << setprecision(20) << odd / double(n-odd) << endl;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:8:24: error: 'setprecision' was not declared in this scope
    8 |       cout << fixed << setprecision(20) << odd / double(n-odd) << endl;
      |                        ^~~~~~~~~~~~
a.cc:2:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    1 |     #include <iostream>
  +++ |+#include <iomanip>
    2 |     using namespace std;
Language: C++

#include <iostream>
using namespace std;

int main () {
 	int n;
  cin >> n;
	int odd = (n&1) ? n/2+1 : n/2
  cout << fixed << setprecision(20) << odd / double(n-odd) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: expected ',' or ';' before 'cout'
    8 |   cout << fixed << setprecision(20) << odd / double(n-odd) << endl;
      |   ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
  	cin >> n;
  	printf("%lf\n",(n/2+(n%2))/(n+0.0))
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:44: error: expected ';' before 'return'
    7 |         printf("%lf\n",(n/2+(n%2))/(n+0.0))
      |                                            ^
      |                                            ;
    8 |         return 0;
      |         ~~~~~~
Language: Java

package Practice;
import java.io.*;
import java.math.BigInteger;
import java.text.DecimalFormat;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import java.util.stream.Stream;

public class Practice {
	
	
	
	
	public static int gcd(int n1, int n2)
    {
        if (n2 != 0)
            return gcd(n2, n1 % n2);
        else
            return n1;
    }
	
	
	
	
	static class pair {
        Integer x,y;
        pair (int x,int y){
            this.x=x;
            this.y=y;
        }
    }
	
	
	
	static class length implements Comparator<String>
	{
		public int compare(String a,String b)
		{
			return(a.length()-b.length());
		}
	}
	
	
	
	
	   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; 
	        } 
	   }

		public static void main(String []args) throws Exception
		{
			//Scanner sc=new Scanner(System.in);
			FastReader in =new FastReader();
			//Scanner in=new Scanner(System.in);
			PrintWriter pw = new PrintWriter(System.out);
			int n1=in.nextInt();
			double n=n1;
			pw.println(new DecimalFormat("0.0000000000").format((Math.ceil(n/2))/n));
			
			
			
			
			pw.flush();
			pw.close();
			
	}
		
		
}		
		
		
		
		
		
		
		
	

Compiler output:
Main.java:10: error: class Practice is public, should be declared in a file named Practice.java
public class Practice {
       ^
1 error
Language: Java

import java.io.*;
import java.math.BigInteger;
import java.text.DecimalFormat;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import java.util.stream.Stream;

public class Practice {
	
	
	
	
	public static int gcd(int n1, int n2)
    {
        if (n2 != 0)
            return gcd(n2, n1 % n2);
        else
            return n1;
    }
	
	
	
	
	static class pair {
        Integer x,y;
        pair (int x,int y){
            this.x=x;
            this.y=y;
        }
    }
	
	
	
	static class length implements Comparator<String>
	{
		public int compare(String a,String b)
		{
			return(a.length()-b.length());
		}
	}
	
	
	
	
	   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; 
	        } 
	   }

		public static void main(String []args) throws Exception
		{
			//Scanner sc=new Scanner(System.in);
			FastReader in =new FastReader();
			//Scanner in=new Scanner(System.in);
			PrintWriter pw = new PrintWriter(System.out);
			int n1=in.nextInt();
			double n=n1;
			pw.println(new DecimalFormat("0.0000000000").format((Math.ceil(n/2))/n));
			
			
			
			
			pw.flush();
			pw.close();
			
	}
		
		
}		
		
		
		
		
		
		
		
	

Compiler output:
Main.java:9: error: class Practice is public, should be declared in a file named Practice.java
public class Practice {
       ^
1 error
Language: C++

#include <iostream>
using namespace std;

int main(){
  double N;
  cin >> N;
  if((N%2)==0)
    cout << 0.5;
  else
    cout << 0.5+(1/N);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:8: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    7 |   if((N%2)==0)
      |       ~^~
      |       | |
      |       | int
      |       double
Language: C++

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

int main() {
  cin >> (int) N;
  if (N % 2 == 0) {
    cout << 0.5;
  }
  else {
    cout << ((double)N + 1)/(2 * (double)N);
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:16: error: 'N' was not declared in this scope
    5 |   cin >> (int) N;
      |                ^
Language: C++

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

int main() {
  cin >> int N;
  if (N % 2 == 0) {
    cout << 0.5;
  }
  else {
    cout << ((double)N + 1)/(2 * (double)N);
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:10: error: expected primary-expression before 'int'
    5 |   cin >> int N;
      |          ^~~
a.cc:6:7: error: 'N' was not declared in this scope
    6 |   if (N % 2 == 0) {
      |       ^
Language: C++

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

int main() {
  int N;
  cin >> N;
  if (N % 2 == 0) {
    cout << 0.5
  }
  else {
    cout << (N + 1)/2
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: expected ';' before '}' token
    8 |     cout << 0.5
      |                ^
      |                ;
    9 |   }
      |   ~             
a.cc:11:22: error: expected ';' before '}' token
   11 |     cout << (N + 1)/2
      |                      ^
      |                      ;
   12 |   }
      |   ~
Language: C++

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

int main() {
  int N;
  cin >> N;
  if (N % 2 == 0) {
    cout << 0.5
  }
  else {
    cout << (N + 1)/2;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: expected ';' before '}' token
    8 |     cout << 0.5
      |                ^
      |                ;
    9 |   }
      |   ~
Language: Java

import java.util.Scanner;
Main class{
  public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    int num = n - n/2;
    double ans = num/n;
    System.out.println(ans);
  }
}
      

Compiler output:
Main.java:2: error: class, interface, enum, or record expected
Main class{
^
Main.java:2: error: <identifier> expected
Main class{
          ^
2 errors
Language: C++

#include<stdio.h>
int main(void)
{
  double n;
  scanf("%f",&n);
  if( n % 2 == 0 ){
    printf("%f",1/2);
  } else if( n % 2 == 1 &&! ( n == 1 ) ){
    n = n / 2 + 1;
    printf("%f",n);
  } else {
    printf("%f",1);
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    6 |   if( n % 2 == 0 ){
      |       ~ ^ ~
      |       |   |
      |       |   int
      |       double
a.cc:8:16: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    8 |   } else if( n % 2 == 1 &&! ( n == 1 ) ){
      |              ~ ^ ~
      |              |   |
      |              |   int
      |              double
Language: C++

#include<stdio.h>
int main(void)
{
  double n;
  scanf("%d",&n);
  if( n % 2 == 0 ){
    printf("%f",1/2);
  } else if( n % 2 == 1 &&! ( n == 1 ) ){
    n = n / 2 + 1;
    printf("%f",n);
  } else {
    printf("%f",1);
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    6 |   if( n % 2 == 0 ){
      |       ~ ^ ~
      |       |   |
      |       |   int
      |       double
a.cc:8:16: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    8 |   } else if( n % 2 == 1 &&! ( n == 1 ) ){
      |              ~ ^ ~
      |              |   |
      |              |   int
      |              double
Language: C

#include<stdio.h>

int main(){
  int n;
  printf("%f\n",((n+1)/2)/(double)n));
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:37: error: expected ';' before ')' token
    5 |   printf("%f\n",((n+1)/2)/(double)n));
      |                                     ^
      |                                     ;
main.c:5:37: error: expected statement before ')' token
Language: C++

import sys
input = sys.stdin.readline

n , m = map(int,input(),split())

edge = [[]for _ in [0] * n]
back = [[]for _ in [0] * n]

for _ in [0] * m:
a , b = map(int,input(),split())
edge[a-1].append(b-1)
back[b-1].aapend(a-1)

res = [None] * (n-1)

for end in range (n):
    for start in edge [end]:
    cost = [-1] * n
    cost = [start] = 0
    new = [start]
    tank = []
    judge = True

    while len (new) > 0 and judge:
        tank []
        for fr in new:
            for go in edge [fr]:
                if cost [go] < 0:
                    cost [go] = cost [fr] + 1
                    tank . append(go)
                    if go == end:
                        judge = False
        new = tank

    if cost [end] >= 0 and cost [end] < len (res):
        p = end
        res = [p + 1]
        while p! = start:
            for e in back [p]:
                if cost [p] == cost [e] + 1:
                    p = e
                    res.append (p + 1)
                    break

    if res [0] == None:
        print (-1)

    else:
        print(les(res))
        for e in res:
            print(e)

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import sys
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

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

int main(){
  int n;
  cin >> n;
  double ans;
  if (n%2==0) ans=0.5;
  if (n==1) ans=1;
  else:
  ans=double(n/2+1)/double(n);
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:7: error: expected primary-expression before ':' token
   11 |   else:
      |       ^
Language: Java


import java.util.*;
import java.util.Collections; // sorting use
import java.io.*;
import static java.lang.System.*;
public class Main  {
    public static void main(String args[]) {
	int i, cnt = 0;
	Scanner sc = new Scanner(System.in);
	int n = sc.nextInt();
	int k = sc.nextInt();
	int h[] = new int[n];

	for (i = 0; i < n; i++) {
	    h[i] = sc.nextInt();		
	    if ( h[i] >= k) {
		cnt++;
	    }
	}

	out.println(cnt);  



Compiler output:
Main.java:21: error: reached end of file while parsing
	out.println(cnt);  
	                 ^
1 error
Language: Java

import java.util.Scanner;

public class A_Odds_of_Oddness {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = scanner.nextInt();
        int oddCount;
        if (n % 2 == 0)
            oddCount = n / 2;
        else
            oddCount = (n + 1) / 2;

        System.out.println((float) oddCount / n);
    }
}


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

import java.util.Scanner;
public class OddsofOddness{
  public static void main(String[]args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    double m = 0;

    if(1<=n && n<=100){
      if(n%2==0){
        m = (double)(n/2)/n;
        System.out.println(m);
      }
      if(n%2==1){
        m = (double)((n+1)/2)/n;
        System.out.println(m);
      }
    }
  }
}


Compiler output:
Main.java:2: error: class OddsofOddness is public, should be declared in a file named OddsofOddness.java
public class OddsofOddness{
       ^
1 error
Language: C++

#include <iostream>

using namespace std;
int main()
{
  int n;
  cin >> n;
  
  double p;
  if (n % 2 == 0)
  {
    P = 0.5;
  }
  else
  {
    p = (n + 1) / 2 / n;
  }
  
  cout << p << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:5: error: 'P' was not declared in this scope
   12 |     P = 0.5;
      |     ^
Language: C++

#include <iostream>

using namespace std;
int main()
{
  int n;
  cin >> n;
  
  double p;
  if (n % 2 == 0)
  {
    P = 0.5;
  }
  else
  {
    p = (n + 1) / 2 / n
  }
  
  cout << p << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:5: error: 'P' was not declared in this scope
   12 |     P = 0.5;
      |     ^
a.cc:16:24: error: expected ';' before '}' token
   16 |     p = (n + 1) / 2 / n
      |                        ^
      |                        ;
   17 |   }
      |   ~
Language: C++

#include<iostream>
using namespace std;
int main()
{    // 整数の入力
    int N;
    cin >> N;
  	//	出力用
  	float a;
    // Nが奇数の時
  	// (float)N%2/Nを返す
    // Nが偶数の時
  	// (float)1/2を返す
    if(N % 2){
      a = (float)(N % 2)/ N;
    }else{
      a = (float)1 / 2;
    }
    // 出力
    cout << std::setprecision(10) << a;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:18: error: 'setprecision' is not a member of 'std'
   19 |     cout << std::setprecision(10) << a;
      |                  ^~~~~~~~~~~~
a.cc:2:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    1 | #include<iostream>
  +++ |+#include <iomanip>
    2 | using namespace std;
Language: C++

#include<iostream>
using namespace std;
int main()
{    // 整数の入力
    int N;
    cin >> N;
  	//	出力用
  	float a;
    // Nが奇数の時
  	// (float)N%2/Nを返す
    // Nが偶数の時
  	// (float)1/2を返す
    if(N % 2){
      a = (float)N % 2 / N;
    }else{
      a = (float)1 / 2;
    }
    // 出力
    cout << setprecision(10) << a;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:20: error: invalid operands of types 'float' and 'int' to binary 'operator%'
   14 |       a = (float)N % 2 / N;
      |           ~~~~~~~~ ^ ~
      |           |          |
      |           float      int
a.cc:19:13: error: 'setprecision' was not declared in this scope
   19 |     cout << setprecision(10) << a;
      |             ^~~~~~~~~~~~
a.cc:2:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    1 | #include<iostream>
  +++ |+#include <iomanip>
    2 | using namespace std;
Language: C++

#include<iostream>
#include<cstdio.h>
using namespace std;
int main(){
  int n;
  cin>>n;
  double ans;
  if(n%2==0){
    ans=1/2;
//    cout<<ans<<endl;
  }
  else{
    ans=(n+1)/2;
    ans=ans/n;
  }
  printf("%12lf\n",ans);
  return 0;
}

Compiler output:
a.cc:2:9: fatal error: cstdio.h: No such file or directory
    2 | #include<cstdio.h>
      |         ^~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#incluse<cstdio.h>
using namespace std;
int main(){
  int n;
  cin>>n;
  double ans;
  if(n%2==0){
    ans=1/2;
//    cout<<ans<<endl;
  }
  else{
    ans=(n+1)/2;
    ans=ans/n;
  }
  printf("%12lf\n",ans);
  return 0;
}

Compiler output:
a.cc:2:2: error: invalid preprocessing directive #incluse; did you mean #include?
    2 | #incluse<cstdio.h>
      |  ^~~~~~~
      |  include
Language: Java

package contest;

import java.io.IOException;
import java.io.InputStream;
import java.util.NoSuchElementException;

public class MyCode {

	public static void main(String[] args) {

		FastScanner scan = new FastScanner();
        int N = Integer.parseInt(scan.next());
        System.out.println(N);

        int oddSum = 0;
        for(int i = 1; i <= N; i++) {
        	if(i%2!=0) {
        		oddSum++;
        	}
        }
        System.out.println((double)oddSum / (double)N);
	}

}

class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }
    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    }
    public double nextDouble() { return Double.parseDouble(next());}
}

Compiler output:
Main.java:7: error: class MyCode is public, should be declared in a file named MyCode.java
public class MyCode {
       ^
1 error
Language: C++

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

int main(){
    int n{};
  	cin>>n;
  	double ans{n/2};
  	if(n&1)
      ans++;
  	ans/=n;
  	cout<<ans;
    return 0;
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namepsace'
    2 | using namepsace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:6:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |         cin>>n;
      |         ^~~
      |         std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 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:7:21: warning: narrowing conversion of '(n / 2)' from 'int' to 'double' [-Wnarrowing]
    7 |         double ans{n/2};
      |                    ~^~
a.cc:11:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |         cout<<ans;
      |         ^~~~
      |         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,z;
  scanf("%d",&N);
  if(n%2==0){
    z=1/2;
    printf("%d",z);
  }else if(n%2==1){
    z=(n+1)/2*n;
    printf("%d",z);
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:6: error: 'n' undeclared (first use in this function)
    6 |   if(n%2==0){
      |      ^
main.c:6:6: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
int main(void)
{
  double n,z;
  scanf("%lf",&n);
  if(n%2==0){
    z=1/2;
    printf("%f",z);
  }else if(n%2==1){
    z=(n+1)/2*n;
    printf("%f",z);
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:7: error: invalid operands to binary % (have 'double' and 'int')
    6 |   if(n%2==0){
      |       ^
main.c:9:13: error: invalid operands to binary % (have 'double' and 'int')
    9 |   }else if(n%2==1){
      |             ^
Language: Java

import java.util.Scanner;

public static void main(String[] args){
  taskA();
}

public static void taskA(){
  
  Scanner sc = new Scanner(System.in);
  int n = sc.nextInt();
  sc.close();
  
  int count = 0;
  
  for(int i = 1; i < n; i++){
    if(i % 2 != 0) count++;
  }
  
  System.out.println(String.format("%.2f", (double) count/n ));
}

Compiler output:
Main.java:3: error: unnamed classes are a preview feature and are disabled by default.
public static void main(String[] args){
              ^
  (use --enable-preview to enable unnamed classes)
1 error
Language: C++

06280480#include<bits/stdc++.h>
using namespace std;

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n;
	cin >> n;
	if(n%2 != 0) cout << (double)(n+1)/(2*n) << "\n";
	else cout << (double)1/2 << "\n";
	return 0;
}

Compiler output:
a.cc:1:1: error: invalid digit "8" in octal constant
    1 | 06280480#include<bits/stdc++.h>
      | ^~~~~~~~
a.cc:1:9: error: stray '#' in program
    1 | 06280480#include<bits/stdc++.h>
      |         ^
a.cc:1:1: error: expected unqualified-id before numeric constant
    1 | 06280480#include<bits/stdc++.h>
      | ^~~~~~~~
a.cc: In function 'int main()':
a.cc:5:9: error: 'ios_base' has not been declared
    5 |         ios_base::sync_with_stdio(0); cin.tie(0);
      |         ^~~~~~~~
a.cc:5:39: error: 'cin' was not declared in this scope
    5 |         ios_base::sync_with_stdio(0); cin.tie(0);
      |                                       ^~~
a.cc:8:22: error: 'cout' was not declared in this scope
    8 |         if(n%2 != 0) cout << (double)(n+1)/(2*n) << "\n";
      |                      ^~~~
a.cc:9:14: error: 'cout' was not declared in this scope
    9 |         else cout << (double)1/2 << "\n";
      |              ^~~~
Language: C

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

Compiler output:
main.c: In function 'main':
main.c:7:9: error: lvalue required as left operand of assignment
    7 |   if(a%2=0)
      |         ^
main.c:12:16: error: lvalue required as left operand of assignment
   12 |     else if(a%2=1)
      |                ^
Language: C++

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

int main() {
    cin >> n;
    if (n % 2) cout << (double)(n + 1) / 2 / n << endl;
    else cout << 0.5 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:12: error: 'n' was not declared in this scope; did you mean 'yn'?
    5 |     cin >> n;
      |            ^
      |            yn
Language: C++

#include<iostream>
using namespace::std
int main(){
int k;
cin>>k;
if(k%2==0)
cout<<k/2;
else cout<<k/2+1;
}

Compiler output:
a.cc:2:21: error: expected ';' before 'int'
    2 | using namespace::std
      |                     ^
      |                     ;
    3 | int main(){
      | ~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
  double a;
  cin >> a;
  int  b = a/2+a%2;
  cout << b/a << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:17: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    6 |   int  b = a/2+a%2;
      |                ~^~
      |                | |
      |                | int
      |                double
Language: C++

#include<iostream>
using namespace std;
int main(){
  double a;
  cin >> a;
  double b = a/2+a%2;
  cout << b/a << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:19: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    6 |   double b = a/2+a%2;
      |                  ~^~
      |                  | |
      |                  | int
      |                  double
Language: C++

#include<iostream>
usign namespace std;
int main(){
  double a;
  cin >> a;
  double b = a/2+a%2;
  cout << b/a << endl;
}

Compiler output:
a.cc:2:1: error: 'usign' does not name a type
    2 | usign namespace 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;
      |   ^~~
      |   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:6:19: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    6 |   double b = a/2+a%2;
      |                  ~^~
      |                  | |
      |                  | int
      |                  double
a.cc:7:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   cout << b/a << endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |   cout << b/a << endl;
      |                  ^~~~
      |                  std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<stdio.h>
int main()
{
	int N,;
	scanf("%d", &N);
	printf("%d", (N / 2) / N);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:15: error: expected unqualified-id before ';' token
    4 |         int N,;
      |               ^
Language: C++

N=input()
N=int(N)
number = 0
for i in range(1,N+1):
    if i%2 == 1:
        number = number + 1
    else:
        pass
#print(number)
print(number/N)

Compiler output:
a.cc:9:2: error: invalid preprocessing directive #print
    9 | #print(number)
      |  ^~~~~
a.cc:1:1: error: 'N' does not name a type
    1 | N=input()
      | ^
Language: C++

#include <iostream>
using namespace std;
int main(void){
    float n;cin>>n;
    if(n/2%2!=0)
        int ans=kiriage(n/2);
    else
        int ans=n/2;
        
    cout<<ans;
}

int kiriage(float x){
    int ans;
    if(!(x%2==0)){
        ans=x+0.5;
    }
    return ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:11: error: invalid operands of types 'float' and 'int' to binary 'operator%'
    5 |     if(n/2%2!=0)
      |        ~~~^~
      |         |  |
      |         |  int
      |         float
a.cc:6:17: error: 'kiriage' was not declared in this scope
    6 |         int ans=kiriage(n/2);
      |                 ^~~~~~~
a.cc:10:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   10 |     cout<<ans;
      |           ^~~
      |           abs
a.cc: In function 'int kiriage(float)':
a.cc:15:11: error: invalid operands of types 'float' and 'int' to binary 'operator%'
   15 |     if(!(x%2==0)){
      |          ~^~
      |          | |
      |          | int
      |          float
Language: C++

#incluce <bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  if(N%2==0){
    cout << 0.5 << endl;
  }else{
    cout << ((double)(N-1)/2.0 + 1.0)/(double)N << endl;
  }
  return 0;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #incluce; did you mean #include?
    1 | #incluce <bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> N;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #incluce <bits/stdc++.h>
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << 0.5 << endl;
      |     ^~~~
a.cc:7:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:20: error: 'endl' was not declared in this scope
    7 |     cout << 0.5 << endl;
      |                    ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #incluce <bits/stdc++.h>
a.cc:9:5: error: 'cout' was not declared in this scope
    9 |     cout << ((double)(N-1)/2.0 + 1.0)/(double)N << endl;
      |     ^~~~
a.cc:9:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:9:52: error: 'endl' was not declared in this scope
    9 |     cout << ((double)(N-1)/2.0 + 1.0)/(double)N << endl;
      |                                                    ^~~~
a.cc:9:52: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: C++

#inluce <bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  if(N%2==0){
    cout << 0.5 << endl;
  }else{
    cout << ((double)(N-1)/2.0 + 1.0)/(double)N << endl;
  }
  return 0;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inluce; did you mean #include?
    1 | #inluce <bits/stdc++.h>
      |  ^~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> N;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #inluce <bits/stdc++.h>
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << 0.5 << endl;
      |     ^~~~
a.cc:7:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:20: error: 'endl' was not declared in this scope
    7 |     cout << 0.5 << endl;
      |                    ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #inluce <bits/stdc++.h>
a.cc:9:5: error: 'cout' was not declared in this scope
    9 |     cout << ((double)(N-1)/2.0 + 1.0)/(double)N << endl;
      |     ^~~~
a.cc:9:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:9:52: error: 'endl' was not declared in this scope
    9 |     cout << ((double)(N-1)/2.0 + 1.0)/(double)N << endl;
      |                                                    ^~~~
a.cc:9:52: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: Java

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

/* Name of the class has to be "Main" only if the class is public. */
public class q1
{
    
    
	public static void main (String[] args) throws java.lang.Exception
	{
			Scanner s = new Scanner(System.in);
			int n = s.nextInt();
			if(n==1) {
				System.out.printf("%.9f", 1.0);
			}
			if(n%2==0) {
				System.out.printf("%.9f", 0.5);
			}
			else {
				System.out.printf("%.9f", 0.6);
			}
	}
}


Compiler output:
Main.java:6: error: class q1 is public, should be declared in a file named q1.java
public class q1
       ^
1 error
Language: C++

//#include <iostream>
//#include <vector>
//#include <algorithm>
#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);++i)

using namespace std;
typedef long long ll;
typedef pair<int,int> P;
const int INF = 100000000;
int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
int main(){
  int N;
  cin >> N;
  int odd = 0;
  for(int i=1; i<=N; i++){
    if(N%2 == 1) odd+;
  }
  cout << (double) odd/ N << endl;

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:22: error: expected primary-expression before ';' token
   17 |     if(N%2 == 1) odd+;
      |                      ^
Language: C++

#include <bits/stdc++.h>

using namespace std;
#define ll long long 
#define lf long double
typedef vector <ll> vi;
int main() 
{
	ll n;
	cin>>n;
	cout<<fixed<<setprecision(7);
	lf ans;
	if(n%2)
	{
		ans=(((n/2)+1)/(lf)n)
	}
	else
	{
		ans=0.5;
	}
	cout<<ans<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:38: error: expected ';' before '}' token
   15 |                 ans=(((n/2)+1)/(lf)n)
      |                                      ^
      |                                      ;
   16 |         }
      |         ~
Language: C

#include <stdio.h>
#include <math.h>
 
int main()
{
  int in;
  int syou,amari;
  int kai;
  double out;
  
  scanf("%d",&in);
  
  syou = in/2;
  amari = in%2;
  kai = syou + amari;
  
  out = kai/in;
  printf("%f\n",out);
  
  return void;  
}

Compiler output:
main.c: In function 'main':
main.c:20:10: error: expected expression before 'void'
   20 |   return void;
      |          ^~~~
Language: C

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

int main()
{
  int in;
  int syou,amari;
  int kai;
  double out;
  
  scanf("%d",&in);
  
  syou = in/2;
  amari = in%2;
  kai = syou + amari;
  
  out = kai/in;
  printf("%d\n",out);
  
  return void;  
}

Compiler output:
main.c: In function 'main':
main.c:20:10: error: expected expression before 'void'
   20 |   return void;
      |          ^~~~
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;
imt main(){
  int n;
  
  scanf("%d",&n);
  
  cout<<(float)((n/2+n%2)/n)<<endl;
}

Compiler output:
a.cc:4:1: error: 'imt' does not name a type; did you mean 'int'?
    4 | imt main(){
      | ^~~
      | int
Language: C++

#include<iostream>
#include<cstdio>
using namesapace std;
imt main(){
  int n;
  
  scanf("%d",&n);
  
  cout<<(float)((n/2+n%2)/n)<<endl;
}

Compiler output:
a.cc:3:7: error: expected nested-name-specifier before 'namesapace'
    3 | using namesapace std;
      |       ^~~~~~~~~~
a.cc:4:1: error: 'imt' does not name a type; did you mean 'int'?
    4 | imt main(){
      | ^~~
      | int
Language: C++

#include <iostream>
using namespace std;

int main(void){
    int N;
    cin >> N;
  	(N/2+1)/N
    cout << (N/2+1)/N << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:18: error: expected ';' before 'cout'
    7 |         (N/2+1)/N
      |                  ^
      |                  ;
    8 |     cout << (N/2+1)/N << endl;
      |     ~~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{ double m;
 m=1/2;
double n;
  cin>>n;
  if (n/2%0)
    cout<<double(((n+1)/2)/n);
  else 
    cout<<m;
 
 
 
 
 
 
 
 
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: warning: division by zero [-Wdiv-by-zero]
    8 |   if (n/2%0)
      |       ~~~^~
a.cc:8:10: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    8 |   if (n/2%0)
      |       ~~~^~
      |        |  |
      |        |  int
      |        double
Language: Java

#include <iostream>
using namespace std;

int main(){
    int n;
    cin >> n;
    double ans = (double)(n-(n/2))/(double)n;

    cout << ans << endl;
}

Compiler output:
Main.java:1: error: illegal character: '#'
#include <iostream>
^
Main.java:1: error: class, interface, enum, or record expected
#include <iostream>
         ^
Main.java:6: error: not a statement
    cin >> n;
        ^
Main.java:9: error: not a statement
    cout << ans << endl;
                ^
Main.java:4: error: unnamed classes are a preview feature and are disabled by default.
int main(){
^
  (use --enable-preview to enable unnamed classes)
5 errors
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double a,b;
  cin>>a;
  if(a%2==1)
  {
    b=(a+1)/2;
  }
  if(a%2==0)
  {
    b=a/2;
  }
  cout<<b/a<<endl;
    return 0;
}
  
  


Compiler output:
a.cc: In function 'int main()':
a.cc:7:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    7 |   if(a%2==1)
      |      ~^~
      |      | |
      |      | int
      |      double
a.cc:11:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   11 |   if(a%2==0)
      |      ~^~
      |      | |
      |      | int
      |      double
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double a,b;
  cin>>a;
  if(a%2==1)
  {
    b=(a+1)/2;
  }
  if(a%2==0)
  {
    b=a/2;
  }
  cout<<b<<endl;
    return 0;
}
  
  

Compiler output:
a.cc: In function 'int main()':
a.cc:7:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    7 |   if(a%2==1)
      |      ~^~
      |      | |
      |      | int
      |      double
a.cc:11:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   11 |   if(a%2==0)
      |      ~^~
      |      | |
      |      | int
      |      double
Language: C++

package atcoder.beginner.contest142.a;

import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		float f=0;
		
		int r = a/2;
		f= (float)r/(float)a;
	
		System.out.println(f);

	}
}


Compiler output:
a.cc:1:1: error: 'package' does not name a type
    1 | package atcoder.beginner.contest142.a;
      | ^~~~~~~
a.cc:3:1: error: 'import' does not name a type
    3 | import java.util.Scanner;
      | ^~~~~~
a.cc:3:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:5:1: error: expected unqualified-id before 'public'
    5 | public class Main {
      | ^~~~~~
Language: C

#include<stdio.h>
int main(){
  float a;
  scanf("%f",&a);
  float b;
  if(a%2==1){
    b=a;
    b=b/(b/2+1);
  else
    printf("1.0000000000\n");
}

Compiler output:
main.c: In function 'main':
main.c:6:7: error: invalid operands to binary % (have 'float' and 'int')
    6 |   if(a%2==1){
      |       ^
main.c:9:3: error: expected '}' before 'else'
    9 |   else
      |   ^~~~
Language: C

#include<stdio.h>
int main(){
  float a;
  scanf("%f",&a);
  if(a==0)
    printf("1.0000000000\n");
  else if(a%2.0==1.0){
    a=a/(a/2.0+1.0);
    printf("%f\n",a);
  }
  else
    printf("0.5000000000\n");
}

Compiler output:
main.c: In function 'main':
main.c:7:12: error: invalid operands to binary % (have 'float' and 'double')
    7 |   else if(a%2.0==1.0){
      |            ^
Language: C

#include<stdio.h>
int main(){
  float a;
  scanf("%f",&a);
  if(a==0)
    printf("1.0000000000\n");
  else if(a%2==1){
    a=a/(a/2+1);
    printf("%f\n",a);
  }
  else
    printf("0.5000000000\n");
}

Compiler output:
main.c: In function 'main':
main.c:7:12: error: invalid operands to binary % (have 'float' and 'int')
    7 |   else if(a%2==1){
      |            ^
Language: C

#include<stdio.h>
int main(){
  float a;
  scanf("%f",&a);
  if(a==0)
    printf("1.0000000000\n");
  else if(a%2==1){
    a=a/(a/2+1);
    printf("%f\n",a);
  else
    printf("0.5000000000\n");
}

Compiler output:
main.c: In function 'main':
main.c:7:12: error: invalid operands to binary % (have 'float' and 'int')
    7 |   else if(a%2==1){
      |            ^
main.c:10:3: error: expected '}' before 'else'
   10 |   else
      |   ^~~~
Language: C++

# coding: utf-8


def solve():
    N = int(input())
    count = 0
    
    for i in range(1, N+1):
        if i % 2 == 1:
            count += 1
    
    print(count/N)


if __name__ == '__main__':
    solve()

Compiler output:
a.cc:1:3: error: invalid preprocessing directive #coding
    1 | # coding: utf-8
      |   ^~~~~~
a.cc:15:16: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
   15 | if __name__ == '__main__':
      |                ^~~~~~~~~~
a.cc:4:1: error: 'def' does not name a type
    4 | def solve():
      | ^~~
Language: Java

import java.util.Scanner;

public class A {
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
		final float N = scan.nextInt();
		scan.close();
		if(N % 2 == 0){
			System.out.println((N / 2) / N);
		}else {
			System.out.println((Math.floor(N / 2) + 1) / N);
		}
	}
}

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

#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
typedef long long ll;
 
int main() {
  
  int n;
  cin >> n;
  int a;
  cout << "2m+1=" << 2*m+1<< endl;
  
  
  
  
  
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:24: error: 'm' was not declared in this scope
   11 |   cout << "2m+1=" << 2*m+1<< endl;
      |                        ^
Language: C++

#include<iostring>
#include<cstdio>
using namespace std;
int main()
{
	double n;
	cin>>n;
	printf("%.10lf",((n+1)/2)/n);
	return 0;
}

Compiler output:
a.cc:1:9: fatal error: iostring: No such file or directory
    1 | #include<iostring>
      |         ^~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
using namespace std;
int main()
{ double m;
 m=1/2;
double  n;
 double k=((n+1)/2)/n;;
  cin>>n;
  if (n&1)
    cout<<k;
  else 
    cout<<m;








return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:8: error: invalid operands of types 'double' and 'int' to binary 'operator&'
    9 |   if (n&1)
      |       ~^~
      |       | |
      |       | int
      |       double
Language: C++

#include<iostream>
using namespace std;
int main()
{ double m;
 m=1/2;
double  n;
  cin>>n;
  if (n&1)
    cout<<((n+1)/2)/n;
  else 
    cout<<m;








return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: invalid operands of types 'double' and 'int' to binary 'operator&'
    8 |   if (n&1)
      |       ~^~
      |       | |
      |       | int
      |       double
Language: C++

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

int main(){
  int N;
  cin >> N;
  int odd = (N+1) / 2;
  double ans = (double)odd / N;
  printf("%.10f\n",ans);
  return 0;
}

Compiler output:
a.cc:2:10: fatal error: bits/stdc++,h: No such file or directory
    2 | #include <bits/stdc++,h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
 
using namespace std;
 
int64_t gcd(long long a,long long b) {
    if(b == 0)return a;
    return gcd(a, a % b);
}

int main() {
    int64_t A, A;
    cin >> A >> B;
    int64_t g = gcd(A, B);
    int64_t ans = 0;
    for(int64_t i = 2; i <= g / i; ++i) {
        if(g % i == 0){
            ++ans;
            while(g % i == 0) { g /= i; }
        }
    }
    if(g > 1) { ans++; }
    cout << ans+1 <<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:16: error: redeclaration of 'int64_t A'
   11 |     int64_t A, A;
      |                ^
a.cc:11:13: note: 'int64_t A' previously declared here
   11 |     int64_t A, A;
      |             ^
a.cc:12:17: error: 'B' was not declared in this scope
   12 |     cin >> A >> B;
      |                 ^
Language: C++

#include <iostream>
using namespace std;

int main() {
    double a;
    cin >> a;
    if(a%2 == 0) {
        cout << a/2;
    } else {
        cout << a/2+1;
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    7 |     if(a%2 == 0) {
      |        ~^~
      |        | |
      |        | int
      |        double
Language: C++

#include<iostream>
using namespace std;
int main(){
  int N,K;
  cin>>n>>K;
  int count =0;
  for(int i=0;i<N;i++){
    int h;
    cin>>h;
    if(h>K){
      count++;
    }
  }
  cout<<count;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: 'n' was not declared in this scope
    5 |   cin>>n>>K;
      |        ^