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

#include "bits/stdc++.h"
#define rep(i,a,n) for(ll i=a;i<n;i++)
using namespace std;
typedef long long ll;
struct start { start() {
  cin.tie(0);
  ios::sync_with_stdio(0);
  cout << fixed << setprecision(10);
}; }start;
void in() {}
template <class Head , class Tail>
void in(Head&& head, Tail&&... tail) {
  cin >> head;
  in(move(tail)...);
}
template <class T>
  void out(T& t) {
  cout << t << 'n';
}
template <class Head , class Tail...>
void out(Head& head , Tail&... tail) {
  cout << head << ' ';
  out(move(tail)...);
}
int main(void) {
  int k,ans=0;
  rep(i,1,k+1){
    if(!i%2){
      rep(j,1,k+1){
      	if(j%2)ans++;
      }
    }
  }
  out(ans);
  return 0;
}


Compiler output:
a.cc:12:32: error: expansion pattern 'Tail&&' contains no parameter packs
   12 | void in(Head&& head, Tail&&... tail) {
      |                                ^~~~
a.cc: In function 'void in(...)':
a.cc:14:11: error: 'tail' was not declared in this scope; did you mean 'Tail'?
   14 |   in(move(tail)...);
      |           ^~~~
      |           Tail
a.cc: At global scope:
a.cc:20:34: error: non-type template parameters of class type only available with '-std=c++20' or '-std=gnu++20'
   20 | template <class Head , class Tail...>
      |                                  ^~~
a.cc:21:32: error: expansion pattern 'Tail&' contains no parameter packs
   21 | void out(Head& head , Tail&... tail) {
      |                                ^~~~
a.cc: In function 'void out(...)':
a.cc:23:12: error: 'tail' was not declared in this scope; did you mean 'Tail'?
   23 |   out(move(tail)...);
      |            ^~~~
      |            Tail
Language: C++

#include "bits/stdc++/h"
#define rep(i,a,n) for(ll i=a;i<n;i++)
using namespace std;
typedef long long ll;
struct start { start() {
  cin.tie(0);
  ios::sync_with_stdio(0);
  cout << fixed << setprecision(10);
}; }start;
void in() {}
template <class Head, class... Tail>
void in(Head&& head, Tail&&... tail) {
  cin >> head;
  in(move(tail)...);
}
template <class T>
  void out(T& t) {
  cout << t << 'n';
}
template <class Head class... Tail>
void out(Head& head , Tail&... tail) {
  cout << head << ' ';
  out(move(tail)...);
}
int main(void) {
  int k,ans=0;
  rep(i,1,k+1){
    if(!i%2){
      rep(j,1,k+1){
      	if(j%2)ans++;
      }
    }
  }
  out(ans);
  return 0;
}


Compiler output:
a.cc:1:10: fatal error: bits/stdc++/h: No such file or directory
    1 | #include "bits/stdc++/h"
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.io.*;

class Main {
    public static void main(String... args) {
        int K = IN.nextInt();
		puts((K / 2) * ((K + 1) / 2));
		flush();
	}
    static final Scanner IN = new Scanner(System.in);
	static final PrintWriter OUT = new PrintWriter(System.out);
	static <T> void puts(T arg) { OUT.println(arg); }
	static void flush() { OUT.flush(); }
}


Compiler output:
Main.java:9: error: cannot find symbol
    static final Scanner IN = new Scanner(System.in);
                 ^
  symbol:   class Scanner
  location: class Main
Main.java:9: error: cannot find symbol
    static final Scanner IN = new Scanner(System.in);
                                  ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

    #include <iostream>
    using namespace std;
     
    int main(){
      cin >> n;
      cout << (n/2)*(n/2+(n%2)) <<endl;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:5:14: error: 'n' was not declared in this scope
    5 |       cin >> n;
      |              ^
Language: C++

#include <cstdio>
using namespace std;

int main ( )
{
	int a, b, c, d;
	scanf("%d %d %d %d", &a, &b, &c, &d);
	int x = c -a ; y = d - b ;
	printf ("%d %d %d %d\n", c - y , d + x , a - y , b + x ) ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:24: error: 'y' was not declared in this scope
    8 |         int x = c -a ; y = d - b ;
      |                        ^
Language: C

include <stdio.h>

int main(){
    int K;
    scanf("%d", &K);
    if(K % 2 == 0){
        printf("%d\n", (K/2)*(K/2));
    }else{
        printf("%d\n", (K/2)*(K/2 + 1));
    }
}

Compiler output:
main.c:1:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include <stdio.h>
      |         ^
Language: C++

#include<iostream>

using namespace std;

int main()
{
  int n,
  cin >> n;
  cout << (n / 2) * ((n + 1) / 2) << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: expected initializer before '>>' token
    8 |   cin >> n;
      |       ^~
Language: C++

#include<iostream>

using namepsace std;

int main()
{
  int n,
  cin >> n;
  cout << (n / 2) * ((n + 1) / 2) << endl;
  return 0;
}

Compiler output:
a.cc:3:7: error: expected nested-name-specifier before 'namepsace'
    3 | using namepsace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:8:7: error: expected initializer before '>>' token
    8 |   cin >> n;
      |       ^~
a.cc:9:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |   cout << (n / 2) * ((n + 1) / 2) << endl;
      |   ^~~~
      |   std::cout
In file included from a.cc:1:
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:38: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    9 |   cout << (n / 2) * ((n + 1) / 2) << 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<iotstream>

using namepsace std;

int main()
{
  int n,
  cin >> n;
  cout << (n / 2) * ((n + 1) / 2) << endl;
  return 0;
}

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

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

int main() {
    int K;
    int e, o;
    cin >> K;
    if (K % 2 == 0) {
	e = K/2;
    o = K/2;
    }
  	else {
      e = K/2
      o = K/2 + 1
    }
    cout << e*o << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:14: error: expected ';' before 'o'
   13 |       e = K/2
      |              ^
      |              ;
   14 |       o = K/2 + 1
      |       ~
Language: C++

#include <iostream>
#include <cstring>
#include <vector>
#include <set>
#include <map>
#include <algorithm>
#include <queue>
#include <cstdio>
#include <cmath>
#include <stack>
typedef long long ll;
#define INF 0x3f3f3f3f

using namespace std;
int main(int argc, char *argv[]) {
	int K;
	cin >> K;
	int odd, even;
	odd = K / 2 + K % 2;
	even = K / 2;
	cout << ood * even << endl;
}

Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:21:17: error: 'ood' was not declared in this scope; did you mean 'odd'?
   21 |         cout << ood * even << endl;
      |                 ^~~
      |                 odd
Language: C++

#include <iostream>
#include <cstring>
#include <vector>
#include <set>
#include <map>
#include <algorithm>
#include <queue>
#include <cstdio>
#include <cmath>
#include <stack>
typedef long long ll;
#define INF 0x3f3f3f3f

using namespace std;
int main(int argc, char *argv[]) {
	int K;
	cin >> K
	int odd, even;
	odd = K / 2 + K % 2;
	even = K / 2;
	cout << ood * even << endl;
}

Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:17:17: error: expected ';' before 'int'
   17 |         cin >> K
      |                 ^
      |                 ;
   18 |         int odd, even;
      |         ~~~      
a.cc:19:9: error: 'odd' was not declared in this scope
   19 |         odd = K / 2 + K % 2;
      |         ^~~
a.cc:20:9: error: 'even' was not declared in this scope
   20 |         even = K / 2;
      |         ^~~~
a.cc:21:17: error: 'ood' was not declared in this scope
   21 |         cout << ood * even << endl;
      |                 ^~~
Language: Java

public class Main{
    public static void main(String[] args){
        
        Scanner sc = new Scanner(System.in);
        
        // input K
        int K = sc.nextInt();
        int odd = 0;
        int even = 0;
        
        if(K%2 == 1){
            odd = K/2 + 1;
            even = K/2;
        }
        else{
            odd = K/2;
            even = K/2;
        }
        System.out.println(odd * even);
    }
}


Compiler output:
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C

#include<studio.h>
int main() {
int a,b,c,d;
scanf ("%d",&a);
b=a/2;
c=a/2+a%2;
d=b*c;
printf ("%d",&d);
  return 0;
}


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

#include<studio.h>
int main() {
int a,b,c,d;
scanf ("%d",&a);
b=a/2;
c=a/2-a%2+1;
d=b*c;
printf ("%d",&d);
  return 0;
}


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

#include "matplotlibcpp.h"
#include <bits/stdc++.h>
#define pb push_back
#define REP(i, n) for (signed long long i = 0; i < (n); i++)
#define MOD 998244353
#define INF 98765431219876543
#define bitcnt(a) (ll) __builtin_popcount((a))
#define lb(a, b) lower_bound((a).begin(), (a).end(), (b))
#define ub(a, b) upper_bound((a).begin(), (a).end(), (b))
using namespace std;

typedef long long ll;
typedef pair<ll, ll> P;
int main() {
  ll a, b;
  cin >> a >> b;
  cout << (a + 1) / 2 * ((b + 1) / 2) << endl;
}

Compiler output:
a.cc:1:10: fatal error: matplotlibcpp.h: No such file or directory
    1 | #include "matplotlibcpp.h"
      |          ^~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <stdio.h>

int main(void) {
	// your code goes here
	scanf("%d",&k);
	if(k%2==0) printf("%d",k*k/4);
	else printf("%d",(k*k-1)/4);
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:21: error: 'k' was not declared in this scope
    5 |         scanf("%d",&k);
      |                     ^
Language: C

#include<stdio.h>
int main(void)
{
    int a=0;
    
    scanf("%d", &a);
    if(a%2==1){
    printf("%d",(a*a-2a+1)/4);
    }
    if(a%2==0){
    printf("%d",(a*a-2a)/4);
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:22: error: invalid suffix "a" on integer constant
    8 |     printf("%d",(a*a-2a+1)/4);
      |                      ^~
main.c:11:22: error: invalid suffix "a" on integer constant
   11 |     printf("%d",(a*a-2a)/4);
      |                      ^~
Language: C++

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


Compiler output:
a.cc: In function 'int main()':
a.cc:6:14: error: 'K' was not declared in this scope
    6 |         cin>>K;
      |              ^
a.cc:10:29: error: 'eedl' was not declared in this scope
   10 |         else cout<<k/2*k/2<<eedl;
      |                             ^~~~
Language: Java

public class Main{
    public static void main(String[] args) {
        new Main().run();
    }

    private void run() {
        Scanner sc = new Scanner(System.in);
        int K = sc.nextInt();
        int res;
        if (K % 2 == 0) {
            res = (K/2)*(K/2);
        } else {
            res = (K/2+1)*(K/2);
        }
        System.out.println(res);
    }
}

Compiler output:
Main.java:7: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:7: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C

#include <stdio.h>
int main()
{
	int k;
	scanf_s("%d", &k);
	printf("%d\n", (k / 2)*((k + 1) / 2));
}

Compiler output:
main.c: In function 'main':
main.c:5:9: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    5 |         scanf_s("%d", &k);
      |         ^~~~~~~
      |         scanf
Language: C


#include <stdio.h>
int main()
{
	int k;
	scanf_s("%d", &k);

	if (k % 2 == 0) {
		int ans = (k / 2)*(k / 2);
		printf("%d\n", ans);
	}
	else {
		int ans = (k / 2)*((k / 2) +1);
		printf("ans=%d\n", ans);
	}
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:6:9: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    6 |         scanf_s("%d", &k);
      |         ^~~~~~~
      |         scanf
Language: C

// kouza01.cpp : アプリケーションのエントリ ポイントを定義します。
//

#include "stdafx.h"


int main()
{
	int k;
	scanf_s("%d", &k);

	if (k % 2 == 0) {
		int ans = (k / 2)*(k / 2);
		printf("%d\n", ans);
	}
	else {
		int ans = (k / 2)*((k / 2) +1);
		printf("ans=%d\n", ans);
	}
    return 0;
}

Compiler output:
main.c:4:10: fatal error: stdafx.h: No such file or directory
    4 | #include "stdafx.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: C

int main()
{
	int k;
	scanf_s("%d", &k);

	if (k % 2 == 0) {
		int ans = (k / 2)*(k / 2);
		printf("%d\n", ans);
	}
	else {
		int ans = (k / 2)*((k / 2) +1);
		printf("ans=%d\n", ans);
	}
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:9: error: implicit declaration of function 'scanf_s' [-Wimplicit-function-declaration]
    4 |         scanf_s("%d", &k);
      |         ^~~~~~~
main.c:8:17: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    8 |                 printf("%d\n", ans);
      |                 ^~~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'printf'
  +++ |+#include <stdio.h>
    1 | int main()
main.c:8:17: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    8 |                 printf("%d\n", ans);
      |                 ^~~~~~
main.c:8:17: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:12:17: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   12 |                 printf("ans=%d\n", ans);
      |                 ^~~~~~
main.c:12:17: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: Java

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] vals = sc.nextLine().split(" ");
        double N = getInt(vals[0]);
        double K = getInt(vals[1]);

        long count1 = 0;
        long count2 = 0;
        for(long i = 1;i <= N;i++){
            if (i % K == 0) count1++;
            if (i % 2 ==　1 && i % K == 2/K) count2++;
        }
        System.out.println((long)Math.pow(count1,3) + (long)Math.pow(count2,3));
        sc.close();
    }
    static int getInt(String val) {
        return Integer.parseInt(val);
    }
    static long getLong(String val) {
        return Long.parseLong(val);
    }
}


Compiler output:
Main.java:14: error: illegal character: '\u3000'
            if (i % 2 ==?1 && i % K == 2/K) count2++;
                        ^
Main.java:14: error: not a statement
            if (i % 2 ==?1 && i % K == 2/K) count2++;
                                    ^
Main.java:14: error: ';' expected
            if (i % 2 ==?1 && i % K == 2/K) count2++;
                                          ^
3 errors
Language: C++

#include<cstdio>
#include<iostream>
using namespace std;
int main()
{

int k,i,j;
int count;
count =0;
scanf("%d",&k);
for(i=2;i<k;i=i+2)
{
for(j=1;j<k;j=j+2)
{
count++;
}
}
printf(count);
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:8: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
   18 | printf(count);
      |        ^~~~~
      |        |
      |        int
In file included from /usr/include/c++/14/cstdio:42,
                 from a.cc:1:
/usr/include/stdio.h:363:43: note:   initializing argument 1 of 'int printf(const char*, ...)'
  363 | extern int printf (const char *__restrict __format, ...);
      |                    ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
Language: C++

#include<cstdio>
#include<iostream>
using namespace std;
int main()
{

int k,i,j;
int count;
count =0;
scanf("%d",&s);
for(i=2;i<k;i=i+2)
{
for(j=1;j<k;j=j+2)
{
count++;
}
}
printf(count);
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: 's' was not declared in this scope
   10 | scanf("%d",&s);
      |             ^
a.cc:18:8: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
   18 | printf(count);
      |        ^~~~~
      |        |
      |        int
In file included from /usr/include/c++/14/cstdio:42,
                 from a.cc:1:
/usr/include/stdio.h:363:43: note:   initializing argument 1 of 'int printf(const char*, ...)'
  363 | extern int printf (const char *__restrict __format, ...);
      |                    ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
Language: C++

include<cstdio>
include<iostream>
using namespace std;
int main()
{

int k,i,j;
int count;
count =0;
scanf("%d",&s);
for(i=2;i<k;i=i+2)
{
for(j=1;j<k;j=j+2)
{
count++;
}
}
printf(count);
return 0;
}


Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<cstdio>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:10:13: error: 's' was not declared in this scope
   10 | scanf("%d",&s);
      |             ^
a.cc:10:1: error: 'scanf' was not declared in this scope
   10 | scanf("%d",&s);
      | ^~~~~
a.cc:18:1: error: 'printf' was not declared in this scope
   18 | printf(count);
      | ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | include<cstdio>
Language: C++

include<cstdio>
include<iostream>
int main()
{
using namespace std;
int k,i,j;
int count;
count =0;
scanf("%d",&s);
for(i=2;i<k;i=i+2)
{
for(j=1;j<k;j=j+2)
{
count++;
}
}
printf(count);
return 0;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<cstdio>
      | ^~~~~~~
Language: C++

#include <iostream>

int main()
{
	int a,d=0,c,e;
	scanf_s("%d", &a);
	c = a / 2;
	e = (a + 1) / 2;
	d=c*e;
	printf("%d",d);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    6 |         scanf_s("%d", &a);
      |         ^~~~~~~
      |         scanf
Language: C++

#include "pch.h"
#include <iostream>

int main()
{
	int a,d=0,c,e;
	scanf_s("%d", &a);
	c = a / 2;
	e = (a + 1) / 2;
	d=c*e;
	printf("%d",d);
}


Compiler output:
a.cc:1:10: fatal error: pch.h: No such file or directory
    1 | #include "pch.h"
      |          ^~~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;

public class pair {
    public static void main(String[] args) {
	Scanner in = new Scanner(System.in);
	int a = in.nextInt();
	int sol = 0;
	for (int i = 1; i <= a; i++) {
	    for (int j = 1; j<= a; j++) {
		if (i%2 == 0 && j%2 != 0)
		    sol++;
	    }
	}
	System.out.println(sol);
    }
}


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

import java.util.Scanner;
public class ABC108A {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int ans = 0;
		if(n % 2 == 0){
			ans = (n / 2) * (n * 2);
		}else{
			ans = (n / 2 + 1) * (n * 2);
		}
		System.out.println(ans);
	}
}


Compiler output:
Main.java:2: error: class ABC108A is public, should be declared in a file named ABC108A.java
public class ABC108A {
       ^
1 error
Language: C++

#import <iostream>
main(){int a,x;std::cin>>a;int x=a/2;std::cout<<((a%2)?(x+1)*x:x*x)<<std::endl;}

Compiler output:
a.cc:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated]
    1 | #import <iostream>
      |  ^~~~~~
a.cc:2:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    2 | main(){int a,x;std::cin>>a;int x=a/2;std::cout<<((a%2)?(x+1)*x:x*x)<<std::endl;}
      | ^~~~
a.cc: In function 'int main()':
a.cc:2:32: error: redeclaration of 'int x'
    2 | main(){int a,x;std::cin>>a;int x=a/2;std::cout<<((a%2)?(x+1)*x:x*x)<<std::endl;}
      |                                ^
a.cc:2:14: note: 'int x' previously declared here
    2 | main(){int a,x;std::cin>>a;int x=a/2;std::cout<<((a%2)?(x+1)*x:x*x)<<std::endl;}
      |              ^
Language: C++

#include <iostream>
using namespace std;

int main(){
  int a;
  cin >> a;
  int x = a / 2;
  cout << (a % 2)?(x+1)*x:x*x << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:31: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    8 |   cout << (a % 2)?(x+1)*x:x*x << endl;
      |                           ~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std ;

int main ()
{
    cin >> a ;
    for ( int i = 2 ; i <= a ; i += 2 ){
        for ( int j = 1 ; j <= a ; j += 2 ){
            cnt ++ ;
        }
    }
    cout << cnt ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'a' was not declared in this scope
    7 |     cin >> a ;
      |            ^
a.cc:10:13: error: 'cnt' was not declared in this scope; did you mean 'int'?
   10 |             cnt ++ ;
      |             ^~~
      |             int
a.cc:13:13: error: 'cnt' was not declared in this scope; did you mean 'int'?
   13 |     cout << cnt ;
      |             ^~~
      |             int
Language: C++

using System;

namespace A
{
    class Program
    {
        static int f(int n)
        {
            if (n == 2) {
                return 1;
            } else {
                return (n - 1) / 2 + f(n - 1);
            }
        }

        static void Main()
        {
            // int a,b,c;
            // a = int.Parse(Console.ReadLine()); //標準入力
            // string[] str = Console.ReadLine().Split(' ');//2つ以上のスペース区切り入力の取得
            // b = int.Parse(str[0]);  //数値で受け取りたい場合は変換する
            // c = int.Parse(str[1]);
            // Console.Write("改行なし a = {0} b = {1} c = {2}", a, b, c)//改行なし出力
            // Console.WriteLine("改行あり a = {0} b = {1} c = {2}", a, b, c);//改行付き出力
            int k = int.Parse(Console.ReadLine());
            Console.WriteLine(f(k));
        }
    }
}


Compiler output:
a.cc:1:7: error: expected nested-name-specifier before 'System'
    1 | using System;
      |       ^~~~~~
a.cc:28:6: error: expected ';' after class definition
   28 |     }
      |      ^
      |      ;
a.cc: In static member function 'static void A::Program::Main()':
a.cc:25:21: error: expected primary-expression before 'int'
   25 |             int k = int.Parse(Console.ReadLine());
      |                     ^~~
a.cc:26:13: error: 'Console' was not declared in this scope
   26 |             Console.WriteLine(f(k));
      |             ^~~~~~~
Language: Java

fun main(args: Array<String>){
    val num = readLine()!!.toInt()
    if(num % 2 == 0) {
        val a = num / 2
        println(a*a)
    }
    else{
        val b = num / 2
        val c = b + 1
        println(b*c)
    }
}


Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
fun main(args: Array<String>){
^
  (use --enable-preview to enable unnamed classes)
Main.java:1: error: <identifier> expected
fun main(args: Array<String>){
             ^
Main.java:1: error: class, interface, enum, or record expected
fun main(args: Array<String>){
                    ^
3 errors
Language: Java

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


public class MainA {
	public static void main(){
		FastScanner sc = new FastScanner();
		PrintWriter out = new PrintWriter(System.out);
		int K = sc.nextInt();
		if(K%2==1){
			int L = (K+1)/2;
			out.println(L*(L-1));
		}else{
			out.println(Math.pow(K/2, 2));
		}
	}
}


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 MainA is public, should be declared in a file named MainA.java
public class MainA {
       ^
1 error
Language: C++

#include<iostream>
using namespace std;
int mian()
{
	int k,g=0,o=0;
	cin>>k;
	for(int i=1;i<=k;i++)
	{
		if(i%2==0)
			g++;
		else
			o++;
	}
	cout<<g*o<<endl;
	return 0;
}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include<iostream>
#include<vector>
#include<algorithm>
#include<cstdio>
#include<cstdlib>
#include<string>
#include<sstream>
#include<cmath>
#include<numeric>
#include<map>
#include<stack>
#include<queue>
#include<list>
#include<set>
using namespace std;
long long int mod = 1e9 + 7;
template <class T>
void inputV(vector<T> &x, int n){
  for(int i=0; i<n; i++) cin >> x[i];
}

int main() {
  int n;
  cin >> n;
  cout << (n%2 == 0 ? (n*n)/4 : (n/2)*((n/2)+1))

  return 0;
}




//


Compiler output:
a.cc: In function 'int main()':
a.cc:25:49: error: expected ';' before 'return'
   25 |   cout << (n%2 == 0 ? (n*n)/4 : (n/2)*((n/2)+1))
      |                                                 ^
      |                                                 ;
   26 | 
   27 |   return 0;
      |   ~~~~~~
Language: C++

#include <iostream>
int main(){
  int a,ans;
  cin >> a;
  if(a%2 == 0){
    ans = a*a/4;}
  else{
    int b = a/2;
    ans = b*(b+1);
  }
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   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:11:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |   cout << ans << 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:11:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   11 |   cout << ans << 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<iostream>
using namespace std;
int main(){
  int x,y;
  cin>>x;
  y=x/2;
  if(x%2==0) cout<<y*y<emdl;
  else cout<<y*(y+1)<<endl;
  
  
  
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:24: error: 'emdl' was not declared in this scope
    7 |   if(x%2==0) cout<<y*y<emdl;
      |                        ^~~~
Language: C++

#include<iostream>
int main(){
  int x,y;
  cin>>x;
  y=x/2;
  if(x%2==0) cout<<y*y<emdl;
  else cout<<y*(y+1)<<endl;
  
  
  
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   cin>>x;
      |   ^~~
      |   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:6:14: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 |   if(x%2==0) cout<<y*y<emdl;
      |              ^~~~
      |              std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:6:24: error: 'emdl' was not declared in this scope
    6 |   if(x%2==0) cout<<y*y<emdl;
      |                        ^~~~
a.cc:7:8: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   else cout<<y*(y+1)<<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:7:23: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |   else cout<<y*(y+1)<<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 <iostream>
using namespace std;

int main(void){
  int k;
  cin >> k;
  cout << (n*(n+n%2)/4) << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'n' was not declared in this scope
    7 |   cout << (n*(n+n%2)/4) << endl;
      |            ^
Language: C++

#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#define all(x) (x).begin(),(x).end()
#pragma GCC optimize ("-O3")
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }
//---------------------------------------------------------------------------------------------------
/*---------------------------------------------------------------------------------------------------
　　　　　　　　　　　 ∧＿∧  
　　　　　 ∧＿∧ 　（´<_｀ ）　 Welcome to My Coding Space!
　　　　 （ ´_ゝ`）　/　 ⌒i     
　　　　／　　　＼　 　  |　|     
　　　 /　　 /￣￣￣￣/　　|  
　 ＿_(__ﾆつ/　    ＿/ .| .|＿＿＿＿  
　 　　　＼/＿＿＿＿/　（u　⊃  
---------------------------------------------------------------------------------------------------*/



int K;
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> K;
    int a = K / 2;
    int b = K - a;
    cout << a * B << endl;
}

Compiler output:
a.cc: In function 'void _main()':
a.cc:30:17: error: 'B' was not declared in this scope
   30 |     cout << a * B << endl;
      |                 ^
Language: C++

#include <iostream>int main(){int k;std::cin>>k;std::cout<<((k+1)/2)*(k/2);}


Compiler output:
a.cc:1:24: warning: extra tokens at end of #include directive
    1 | #include <iostream>int main(){int k;std::cin>>k;std::cout<<((k+1)/2)*(k/2);}
      |                        ^~~~
a.cc:1:10: fatal error: iostream>in: No such file or directory
    1 | #include <iostream>int main(){int k;std::cin>>k;std::cout<<((k+1)/2)*(k/2);}
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: Java

public class Main {
	public static void main(String[] args){
	Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    //偶数を選ぶ個数= 偶数の個数
    int eve = k/2;
    //奇数を選ぶ個数= 奇数の個数
    //kが奇数の時
    //kが偶数の時
    if (k%2==0){
        int odd = k/2;
    }
    else {
    	int odd = k/2 - 1;
    }
System.out.println( odd * eve);
}
}

Compiler output:
Main.java:3: error: cannot find symbol
	Scanner scanner = new Scanner(System.in);
	^
  symbol:   class Scanner
  location: class Main
Main.java:3: error: cannot find symbol
	Scanner scanner = new Scanner(System.in);
	                      ^
  symbol:   class Scanner
  location: class Main
Main.java:6: error: cannot find symbol
    int eve = k/2;
              ^
  symbol:   variable k
  location: class Main
Main.java:10: error: cannot find symbol
    if (k%2==0){
        ^
  symbol:   variable k
  location: class Main
Main.java:11: error: cannot find symbol
        int odd = k/2;
                  ^
  symbol:   variable k
  location: class Main
Main.java:14: error: cannot find symbol
    	int odd = k/2 - 1;
    	          ^
  symbol:   variable k
  location: class Main
Main.java:16: error: cannot find symbol
System.out.println( odd * eve);
                    ^
  symbol:   variable odd
  location: class Main
7 errors
Language: Java

public class Main {
	public static void main(String[] args){
	Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    //偶数を選ぶ個数= 偶数の個数
    int eve = k/2
    //奇数を選ぶ個数= 奇数の個数
    //kが奇数の時
    //kが偶数の時
    if (k%2==0){
        int odd = k/2;
    }
    else {
    	int odd = k/2 - 1;
    }
System.out.println( odd * eve);
}
}

Compiler output:
Main.java:6: error: ';' expected
    int eve = k/2
                 ^
1 error
Language: C++

import java.util.Scanner;

class Main{

	public static void main(String[] args) {




		Scanner scan = new Scanner(System.in);
		int K = scan.nextInt();
		int a = K /2;
		
			System.out.println( (K-a) *a);

		


	}






}


Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.Scanner;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:5:15: error: expected ':' before 'static'
    5 |         public static void main(String[] args) {
      |               ^~~~~~~
      |               :
a.cc:5:33: error: 'String' has not been declared
    5 |         public static void main(String[] args) {
      |                                 ^~~~~~
a.cc:5:42: error: expected ',' or '...' before 'args'
    5 |         public static void main(String[] args) {
      |                                          ^~~~
a.cc:26:2: error: expected ';' after class definition
   26 | }
      |  ^
      |  ;
a.cc: In static member function 'static void Main::main(int*)':
a.cc:10:17: error: 'Scanner' was not declared in this scope
   10 |                 Scanner scan = new Scanner(System.in);
      |                 ^~~~~~~
a.cc:11:25: error: 'scan' was not declared in this scope
   11 |                 int K = scan.nextInt();
      |                         ^~~~
a.cc:14:25: error: 'System' was not declared in this scope
   14 |                         System.out.println( (K-a) *a);
      |                         ^~~~~~
Language: Java

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
      	int count = 0;
		int K = sc.nextInt();
		for(int i = 2;i <= K; i = i + 2){
          fot(int j = 1;j <= K; j = j + 2){
            count++;
          }
        }
	}
}

Compiler output:
Main.java:9: error: '.class' expected
          fot(int j = 1;j <= K; j = j + 2){
                  ^
Main.java:9: error: not a statement
          fot(int j = 1;j <= K; j = j + 2){
                          ^
Main.java:9: error: ';' expected
          fot(int j = 1;j <= K; j = j + 2){
                                         ^
3 errors
Language: C++

using namespace std;
typedef long long ll;
typedef pair<int, int> P;
const ll MOD = 1000000007LL;
int main()
{
	ll N,k;
	cin >> N >> k;
	ll number = 0;
	number = N / k;
	number = number * number*number;
	if (k%2 == 0 && N>=k/2){
		ll y = (N - 2 / 2) / k+1;
		cout << y << endl;
		number = number + y*y*y;
	}
	cout << number << endl;

}

Compiler output:
a.cc:3:9: error: 'pair' does not name a type
    3 | typedef pair<int, int> P;
      |         ^~~~
a.cc: In function 'int main()':
a.cc:8:9: error: 'cin' was not declared in this scope
    8 |         cin >> N >> k;
      |         ^~~
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:14:17: error: 'cout' was not declared in this scope
   14 |                 cout << y << endl;
      |                 ^~~~
a.cc:14:17: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:14:30: error: 'endl' was not declared in this scope
   14 |                 cout << y << 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;
a.cc:17:9: error: 'cout' was not declared in this scope
   17 |         cout << number << endl;
      |         ^~~~
a.cc:17:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:17:27: error: 'endl' was not declared in this scope
   17 |         cout << number << endl;
      |                           ^~~~
a.cc:17:27: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: Java

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
      	int count = 0;
		int K = sc.nextInt();
		for(int i = 2;i <= K; i = i + 2){
          fot(int j = 1;j <= K; j = j + 2){
            count++
          }
        }
	}
}

Compiler output:
Main.java:9: error: '.class' expected
          fot(int j = 1;j <= K; j = j + 2){
                  ^
Main.java:9: error: not a statement
          fot(int j = 1;j <= K; j = j + 2){
                          ^
Main.java:9: error: ';' expected
          fot(int j = 1;j <= K; j = j + 2){
                                         ^
Main.java:10: error: ';' expected
            count++
                   ^
4 errors
Language: C++

def run(k):
    return (k // 2)*(k // 2 + k % 2)


def read_line():
    k = int(input())
    return k


def main():
    k = read_line()
    print(run(k))


if __name__ == '__main__':
    main()


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

import java.util.Scanner;
public class Main {
   public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int x = scan.nextInt();
        int a = (x/2+x%2)*x/2);
        System.out.println(a);
        scan.close();
    }
}


Compiler output:
Main.java:6: error: ';' expected
        int a = (x/2+x%2)*x/2);
                             ^
1 error
Language: Java

import java.util.Scanner;
public class Main {
   public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int x = scan.nextInt();
        int a = ( x % 2 + x / 2 ) * x / 2 );
        System.out.println(a);
        scan.close();
    }
}


Compiler output:
Main.java:6: error: ';' expected
        int a = ( x % 2 + x / 2 ) * x / 2 );
                                         ^
1 error
Language: Java

import java.util.Scanner;
public class Main {
   public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int x = scan.nextInt();
        int a = (x%2 + x/2) * x/2);
        System.out.println(a)
        scan.close();
    }
}


Compiler output:
Main.java:6: error: ';' expected
        int a = (x%2 + x/2) * x/2);
                                 ^
Main.java:7: error: ';' expected
        System.out.println(a)
                             ^
2 errors
Language: Java

import java.util.Scanner;
public class Main {
   public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int num = scan.nextInt();
        System.out.println(num/2 + num%2)* num/2;
        scan.close();
    }
}


Compiler output:
Main.java:6: error: not a statement
        System.out.println(num/2 + num%2)* num/2;
                                              ^
1 error
Language: Java

import java.util.Scanner;
public class Main {
   public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int num = scan.nextInt();
        int a = num/2;
        int x = num%2
        int c = a + x * x
        System.out.println(c);
        scan.close();
    }
}


Compiler output:
Main.java:7: error: ';' expected
        int x = num%2
                     ^
Main.java:8: error: ';' expected
        int c = a + x * x
                         ^
2 errors
Language: C++

#include<iostream>
#include <stdlib.h>
#include <algorithm>
#include <string>
#include <math.h>
typedef long long int ll;
using namespace std;
int main(){
	ll N,K;
	cin >>N >>K;
	ll count=0;
	ll count1=0;
	ll ans=0;
	if(K%2==0){
		count=N/K;
		count1=N/(K/2)-count;
		ans=count*count*count+count1*count1*count1;
	}else{
		count=N/K; 
		ans=count*count*count;
	}
	cout <pow(count,3)+pow(count1,3) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:42: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and '<unresolved overloaded function type>' to binary 'operator<<'
   22 |         cout <pow(count,3)+pow(count1,3) << endl;
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
Language: C++

    #include<iostream>
    int  main (void){
     int  k,n ;
     std::cin >> k;
     n=(k/2)*((k+1)/2);
     std::cout << n << endl;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:6:24: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    6 |      std::cout << n << endl;
      |                        ^~~~
      |                        std::endl
In file included from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<iostream>
int  main (void){
 int  k,n ;
 cin >> k;
 n=(k/2)*((k+1)/2);
 cout << n << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:2: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |  cin >> k;
      |  ^~~
      |  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:6:2: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 |  cout << n << 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:6:15: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    6 |  cout << n << 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,K,n=0,a,b,c;
scanf("%d%d",&N,&K);
for(a=1;a<=N;a++){
  for(b=1;b<=N;b++){
    for(c=1;c<=N;c++){
    if((a+b)%K==0 && (b+c)%K==0 && (c+a)%K==0)
    n=n+1;
   }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:2: error: expected '}' at end of input
   12 | }
      |  ^
a.cc:2:11: note: to match this '{'
    2 | int main(){
      |           ^
Language: C++

#include<stdio.h>
int main()
{
int a , b , c , d ;
scanf ("%d%d%d%d"  ,&a ,&b ,&c,&d ) ;
int x = c − a , y = d − b ;
printf ("%d %d %d %d\n " , c − y , d + x , a − y , b + x ) ;
}


Compiler output:
a.cc:6:11: error: extended character − is not valid in an identifier
    6 | int x = c − a , y = d − b ;
      |           ^
a.cc:6:23: error: extended character − is not valid in an identifier
    6 | int x = c − a , y = d − b ;
      |                       ^
a.cc:7:30: error: extended character − is not valid in an identifier
    7 | printf ("%d %d %d %d\n " , c − y , d + x , a − y , b + x ) ;
      |                              ^
a.cc:7:46: error: extended character − is not valid in an identifier
    7 | printf ("%d %d %d %d\n " , c − y , d + x , a − y , b + x ) ;
      |                                              ^
a.cc: In function 'int main()':
a.cc:6:11: error: expected ',' or ';' before '\U00002212'
    6 | int x = c − a , y = d − b ;
      |           ^
a.cc:7:29: error: expected ')' before '\U00002212'
    7 | printf ("%d %d %d %d\n " , c − y , d + x , a − y , b + x ) ;
      |        ~                    ^~
      |                             )
a.cc:7:45: error: expected ')' before '\U00002212'
    7 | printf ("%d %d %d %d\n " , c − y , d + x , a − y , b + x ) ;
      |        ~                                    ^~
      |                                             )
Language: Java

import java.util.*;
public class Main {

    public static void main(String[] args) {
        Scanner reader = new Scanner(System.in);
		int k = reader.nextInt();
        if (k%2!=0){
      	System.out.printf("%d\n",((k/2)*(k+1)/2));}
        else{
        System.out.printf("%d\n",((k/2)*(k/2)));}
        }
    }

}


Compiler output:
Main.java:14: error: class, interface, enum, or record expected
}
^
1 error
Language: Java

import java.util.*;
public class Main {

    public static void main(String[] args) {
        Scanner reader = new Scanner(System.in);
		int k = reader.nextInt();
        if (k%2!=0){
      	System.out.printf("%d\n",(k/2)*((k+1/2)));}
        else{
        System.out.printf("%d\n",(k/2)*(k/2);}
        }
    }

}


Compiler output:
Main.java:10: error: ')' or ',' expected
        System.out.printf("%d\n",(k/2)*(k/2);}
                                            ^
Main.java:14: error: class, interface, enum, or record expected
}
^
2 errors
Language: Java

import java.util.*
public class Main {

    public static void main(String[] args) {
        Scanner reader = new Scanner(System.in);
		int k = reader.nextInt();
        if (k%2!=0){
      	System.out.printf("%d\n",(k/2)*((k+1/2)));}
        else{
        System.out.printf("%d\n",(k/2)*(k/2);}
        }
    }

}


Compiler output:
Main.java:1: error: ';' expected
import java.util.*
                  ^
Main.java:10: error: ')' or ',' expected
        System.out.printf("%d\n",(k/2)*(k/2);}
                                            ^
Main.java:14: error: class, interface, enum, or record expected
}
^
3 errors