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

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

int main() { 
  int H ,W ,h ,w, ;
  cin >>H>>W>>h>>w ;
  cout << (H-h)*(W-w) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:19: error: expected unqualified-id before ';' token
    5 |   int H ,W ,h ,w, ;
      |                   ^
Language: C++

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

int main() { 
  int H ,W ,h ,w, ;
  
  cout << (H-h)*(W-w) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:19: error: expected unqualified-id before ';' token
    5 |   int H ,W ,h ,w, ;
      |                   ^
Language: C++

    #include<bits/stdc++.h>
    using namespace std;
     
    int main(){
    int H,W,h,w,c;
      cin>>H>>W>>h>>w;
      
      cout<<((H*W)-((h*W)+(w*H)-(h*w))<<endl;
      return 0;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:8:39: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    8 |       cout<<((H*W)-((h*W)+(w*H)-(h*w))<<endl;
      |              ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
a.cc:8:45: error: expected ')' before ';' token
    8 |       cout<<((H*W)-((h*W)+(w*H)-(h*w))<<endl;
      |             ~                               ^
      |                                             )
Language: C++

# include < bits/stdc++.h >
using namespace std ;
int main () {
int H , W ; cin >> H >> W ;
int h , w ; cin >> h >> w ;
int ans = ( H - h ) * ( W - w );
cout << ans << endl ;
}

Compiler output:
a.cc:1:11: fatal error:  bits/stdc++.h : No such file or directory
    1 | # include < bits/stdc++.h >
      |           ^~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

# include < bits/stdc ++.h >
using namespace std ;
int main () {
int H , W ; cin >> H >> W ;
int h , w ; cin >> h >> w ;
int ans = ( H - h ) * ( W - w );
cout << ans << endl ;
}

Compiler output:
a.cc:1:11: fatal error:  bits/stdc ++.h : No such file or directory
    1 | # include < bits/stdc ++.h >
      |           ^~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

# include < bits / stdc ++.h >
using namespace std ;
int main () {
int H , W ; cin >> H >> W ;
int h , w ; cin >> h >> w ;
int ans = ( H - h ) * ( W - w );
cout << ans << endl ;
}

Compiler output:
a.cc:1:11: fatal error:  bits / stdc ++.h : No such file or directory
    1 | # include < bits / stdc ++.h >
      |           ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>

int main() {
  int H, W, a, b;
  cin >> H >> W;
  cin >> a >> b;
  
  cout << (H-a) * (W-b) << endl;
}

Compiler output:
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 >> H >> W;
      |   ^~~
      |   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:8:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |   cout << (H-a) * (W-b) << 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:8:28: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 |   cout << (H-a) * (W-b) << 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 <bits/stdc++.h>
using namespace std;
int main()
{
  int H,W,h,w;
  cin H >> W >> h >> w;
  cout << H * W - h * W - H * w + h* w;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:6:6: error: expected ';' before 'H'
    6 |   cin H >> W >> h >> w;
      |      ^~
      |      ;
Language: C++

#include<iostream>
using namespace std;
int main(){
  int H,W,h,w;
  cin>>H>>W>>h>>w;
  int total=H*W;
  ans=tota-h*W-(H-h)*w;
  cout>>ans;
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'ans' was not declared in this scope; did you mean 'abs'?
    7 |   ans=tota-h*W-(H-h)*w;
      |   ^~~
      |   abs
a.cc:7:7: error: 'tota' was not declared in this scope; did you mean 'total'?
    7 |   ans=tota-h*W-(H-h)*w;
      |       ^~~~
      |       total
Language: C

#include <stdio.h>
int main(int argc, char const *argv[])
{
	int N,M,C,A[20][20],B[20],i,j,sum[20],count = 0;
	scanf("%d %d %d",&N,&M,&C);
	for(i = 0;i < M ;i++) scanf("%d",&B[i]);
	for(i = 0;i < N ;i++){ 
		for(j = 0;j < M; j++){ 
			scanf("%d",&A[i][j]); 
			sum[i] += A[i][j];
		} 
		sum[i] += B[i]
	}
	for(i = 0;i < N ;i++) {
		if(sum[i] > 0) count++;
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:31: error: expected ';' before '}' token
   12 |                 sum[i] += B[i]
      |                               ^
      |                               ;
   13 |         }
      |         ~
Language: C

#include <stdio.h>
int main(int argc, char const *argv[])
{
	int N,M,C,A[20][20],B[20],i,j,sum[20],count = 0;
	scanf("%d %d %d",&N,&M,%C);
	for(i = 0;i < M ;i++) scanf("%d",&B[i]);
	for(i = 0;i < N ;i++){ 
		for(j = 0;j < M; j++){ 
			scanf("%d",&A[i][j]); 
			sum[i] += A[i][j];
		} 
		sum[i] += B[i]
	}
	for(i = 0;i < N ;i++) {
		if(sum[i] > 0) count++;
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:32: error: expected expression before '%' token
    5 |         scanf("%d %d %d",&N,&M,%C);
      |                                ^
main.c:12:31: error: expected ';' before '}' token
   12 |                 sum[i] += B[i]
      |                               ^
      |                               ;
   13 |         }
      |         ~
Language: C

#include <stdio.h>
int main(int argc, char const *argv[])
{
	int N,M,C,A[20][20],B[20],i,j,sum[20],count = 0;
	scanf("%d %d %d",&N,&M,%C);
	for(i = 0;i < M ;i++) scanf("%d",&B[i]);
	for(i = 0;i < N ;i++){ 
		for(j = 0;j < M; j++){ 
			scanf("%d",&A[i][j]); 
			sum[i] += a[i][j];
		} 
		sum[i] += B[i]
	}
	for(i = 0;i < N ;i++) {
		if(sum[i] > 0) count++;
	}
	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:5:32: error: expected expression before '%' token
    5 |         scanf("%d %d %d",&N,&M,%C);
      |                                ^
main.c:10:35: error: 'a' undeclared (first use in this function)
   10 |                         sum[i] += a[i][j];
      |                                   ^
main.c:10:35: note: each undeclared identifier is reported only once for each function it appears in
main.c:12:31: error: expected ';' before '}' token
   12 |                 sum[i] += B[i]
      |                               ^
      |                               ;
   13 |         }
      |         ~
Language: C++

#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <numeric>
#include <functional>
#include <cmath>
#include <queue>
#include <stack>

#define repd(i,a,b) for (int i=(a);i<(b);i++)
#define rep(i,n) repd(i,0,n)
typedef long long ll;

using namespace std;


int inputValue(){
    int a;
    cin >> a;
    return a;
};

void inputArray(int * p, int a){
    rep(i, a){
        cin >> p[i];
    }
};

void inputVector(vector<int> * p, int a){
    rep(i, a){
        int input;
        cin >> input;
        p -> push_back(input);
    }
}

template <typename T>
void output(T a, int precision) {
    if(precision > 0){
        cout << setprecision(precision)  << a << "\n";
    }
    else{
        cout << a << "\n";
    }
}

int main(int argc, const char * argv[]) {
    
    // source code
	int H=inputValue();
	int W=inputValue();
	int h=inputValue();
	int W=inputValue();
	cout << (H-h)*(W-w) << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:54:13: error: redeclaration of 'int W'
   54 |         int W=inputValue();
      |             ^
a.cc:52:13: note: 'int W' previously declared here
   52 |         int W=inputValue();
      |             ^
a.cc:55:26: error: 'w' was not declared in this scope
   55 |         cout << (H-h)*(W-w) << endl;
      |                          ^
Language: C++

#include <iostream>
using namespace std;
int main(void){
    int H,W,h,w;
    cin>>H>>W>>h>>w>>;
    cout<<H*W-(h*W+w*H-h*w)<<endl;
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:22: error: expected primary-expression before ';' token
    5 |     cin>>H>>W>>h>>w>>;
      |                      ^
Language: C++

#include <iostream>
using namespace std;
int main(void){
    int H,W,h,w;
    cin>>H>>W>>h>>w>>;
    cout<<H*W-(h*W+w*H-h*w)<<;
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:22: error: expected primary-expression before ';' token
    5 |     cin>>H>>W>>h>>w>>;
      |                      ^
a.cc:6:30: error: expected primary-expression before ';' token
    6 |     cout<<H*W-(h*W+w*H-h*w)<<;
      |                              ^
Language: C++

H, W = gets.split.map(&:to_i)
h, w = gets.split.map(&:to_i)

puts H * W - h * W - w * (H - h)

Compiler output:
a.cc:1:1: error: 'H' does not name a type
    1 | H, W = gets.split.map(&:to_i)
      | ^
Language: C++

#include <iostream>

using namespace std;

int main(){
  int H, W, h, w;
  cin >> H >> W >> h >> w;
  cout << "H * W - H * w - W * h + h * w;
  
  return 0;
}

Compiler output:
a.cc:8:11: warning: missing terminating " character
    8 |   cout << "H * W - H * w - W * h + h * w;
      |           ^
a.cc:8:11: error: missing terminating " character
    8 |   cout << "H * W - H * w - W * h + h * w;
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:10:3: error: expected primary-expression before 'return'
   10 |   return 0;
      |   ^~~~~~
Language: Java



import java.util.Scanner;

public class main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int H = sc.nextInt();
        int W = sc.nextInt();
        int h = sc.nextInt();
        int w = sc.nextInt();
        System.out.println((H-h)*(W-w));
    }
}


Compiler output:
Main.java:5: error: class main is public, should be declared in a file named main.java
public class main {
       ^
1 error
Language: C++

#include <iostream>
using namespace std;
int main(void) {
	int a[4];
	
	// 標準入力する
	for (int i = 0, int n = sizeof(a); i << n; ++i) {
		cin >> a[i];
	}

	// 標準出力する
	cout << (a[0] - a[2]) * (a[1] - a[3]);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:25: error: expected unqualified-id before 'int'
    7 |         for (int i = 0, int n = sizeof(a); i << n; ++i) {
      |                         ^~~
a.cc:7:24: error: expected ';' before 'int'
    7 |         for (int i = 0, int n = sizeof(a); i << n; ++i) {
      |                        ^~~~
      |                        ;
a.cc:7:50: error: expected ')' before ';' token
    7 |         for (int i = 0, int n = sizeof(a); i << n; ++i) {
      |             ~                                    ^
      |                                                  )
a.cc:7:54: error: 'i' was not declared in this scope
    7 |         for (int i = 0, int n = sizeof(a); i << n; ++i) {
      |                                                      ^
Language: C++

#include <iostream>
using namesapce std;
int main()
{
  int m, n, a, b,sum;
  cin>>m>>n>>a>>b;
  sum=m*n-a*n-b*m+a*b;
  cout<<sum;
  return 0;
  
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namesapce'
    2 | using namesapce std;
      |       ^~~~~~~~~
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>>m>>n>>a>>b;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:8:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |   cout<<sum;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

H, W = gets.chomp.split.map(&:to_i)
h, w = gets.chomp.split.map(&:to_i)
puts (H - h) * (W - w)

Compiler output:
a.cc:1:1: error: 'H' does not name a type
    1 | H, W = gets.chomp.split.map(&:to_i)
      | ^
Language: Java

import java.util.Scanner;

public class Main {
  private static String DELIMITER = " ";

  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    String rowLine = scanner.nextLine();
    String rowLineToFill = scanner.nextLine();
    String[] rowLineArray = rowLine.split(DELIMITER);
    String[] rowLineToFillArray = rowLineToFill.split(DELIMITER);
    int rowNum = Integer.valueOf(rowLineArray[0]);
    int lineNum = Integer.valueOf(rowLineArray[1]);
    int rowToFillNum = Integer.valueOf(rowLineToFillArray[0]);
    int lineToFillNum = Integer.valueOf(rowLineToFillArray[1]);
    int cellNum = rowNum * lineNum;
    int notFilled = (rowNum - rowToFillNum) * (lineNum - lineToFillNum)
    System.out.println(notFilled);
  }
}


Compiler output:
Main.java:17: error: ';' expected
    int notFilled = (rowNum - rowToFillNum) * (lineNum - lineToFillNum)
                                                                       ^
1 error
Language: C++

#include<iostream>
using namespace std;

int main(){
	int n,m,c;
	int a[20][20];
	int b[20];
	cin>>n>>m>>c;
	for(int i=0;i<m;i++){
		cin>>b[i];
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++){
			cin>>a[i][j];
	}
	}

	int ans=0;
	int sum=0;
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++){
			sum+=b[j]*a[i][j];
		}
		sum+=c;
		if(sum>0)ans++;
		sum=0
	}

	cout<<ans<<endl;


	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:22: error: expected ';' before '}' token
   26 |                 sum=0
      |                      ^
      |                      ;
   27 |         }
      |         ~
Language: C++

#include<iostream>
using namespace std;
int main()
{
  int H,W,h,w;
  cin>>H>>W;
  cin>>h>>w;
  int ans = ((H*W)-(((h*W)+((w*H)-(w*h))));
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:43: error: expected ')' before ';' token
    8 |   int ans = ((H*W)-(((h*W)+((w*H)-(w*h))));
      |             ~                             ^
      |                                           )
Language: C++

fun main(args : Array<String>) {
    val(H,W) = readLine()!!.split(" ").map(String::toInt)
    val(h,w) = readLine()!!.split(" ").map(String::toInt)
    println((H-h)*(W-w))
}


Compiler output:
a.cc:1:1: error: 'fun' does not name a type
    1 | fun main(args : Array<String>) {
      | ^~~
Language: Java

<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>6.0.15.Final</version>
</dependency>


Compiler output:
Main.java:1: error: class, interface, enum, or record expected
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
^
1 error
Language: Java

import java.util.*;
public class whitecells {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int H = in.nextInt();
		int W = in.nextInt();
		int h = in.nextInt();
		int w = in.nextInt();
		System.out.println((H-h)*(W-w));
	}
}


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

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


int main(){
  cin >> W, H;
  cin >> w, h;

  cout << (W-w)*(H-h);
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: 'W' was not declared in this scope
    6 |   cin >> W, H;
      |          ^
a.cc:6:13: error: 'H' was not declared in this scope
    6 |   cin >> W, H;
      |             ^
a.cc:7:10: error: 'w' was not declared in this scope
    7 |   cin >> w, h;
      |          ^
a.cc:7:13: error: 'h' was not declared in this scope
    7 |   cin >> w, h;
      |             ^
Language: C++

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

cin >> W, H;
cin >> w, h;

cout << (W-w)*(H-h);

Compiler output:
a.cc:4:1: error: 'cin' does not name a type
    4 | cin >> W, H;
      | ^~~
a.cc:5:1: error: 'cin' does not name a type
    5 | cin >> w, h;
      | ^~~
a.cc:7:1: error: 'cout' does not name a type
    7 | cout << (W-w)*(H-h);
      | ^~~~
Language: C++

int H, W, h, w;

std::cin >> H, W;
std::cin >> h,w;

std::cout << (H-h)*(W-w);

Compiler output:
a.cc:3:6: error: 'cin' in namespace 'std' does not name a type
    3 | std::cin >> H, W;
      |      ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | int H, W, h, w;
a.cc:4:6: error: 'cin' in namespace 'std' does not name a type
    4 | std::cin >> h,w;
      |      ^~~
a.cc:4:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    4 | std::cin >> h,w;
      | ^~~
a.cc:6:6: error: 'cout' in namespace 'std' does not name a type
    6 | std::cout << (H-h)*(W-w);
      |      ^~~~
a.cc:6:1: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    6 | std::cout << (H-h)*(W-w);
      | ^~~
Language: C

#include <stdio.h>

void main(void)
{
    int H,W,h,w;
    scanf("%d", &H);
    scanf("%d", &W);
    scanf("%d", %h);
    scanf("%d", &w);
    printf("%d",H*W-h*W-w*H+h*w);
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:8:17: error: expected expression before '%' token
    8 |     scanf("%d", %h);
      |                 ^
main.c:11:12: error: 'return' with a value, in function returning void [-Wreturn-mismatch]
   11 |     return 0;
      |            ^
main.c:3:6: note: declared here
    3 | void main(void)
      |      ^~~~
Language: C

#include <stdio.h>

void main(void)
{
    int H,W;
    int h,w;
    scanf("%d", &H);
    scanf("%d", &W);
    scanf("%d", %h);
    scanf("%d", &w);
    return H*W-h*W-w*H+h*w;
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:9:17: error: expected expression before '%' token
    9 |     scanf("%d", %h);
      |                 ^
main.c:11:23: error: 'return' with a value, in function returning void [-Wreturn-mismatch]
   11 |     return H*W-h*W-w*H+h*w;
      |            ~~~~~~~~~~~^~~~
main.c:3:6: note: declared here
    3 | void main(void)
      |      ^~~~
main.c:12:12: error: 'return' with a value, in function returning void [-Wreturn-mismatch]
   12 |     return 0;
      |            ^
main.c:3:6: note: declared here
    3 | void main(void)
      |      ^~~~
Language: Java

import java.util.Scanner;

public class A {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        int Hight = sc.nextInt();
        int Width = sc.nextInt();
        int row = sc.nextInt();
        int column = sc.nextInt();
        int ans = Hight * Width;
        ans -= row * Width;
        ans -= ((Hight - row) * column);
        System.out.println(ans);
        sc.close();
    }
}


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>

using namespace std;

int main()
{
 int i,j;
 int a,b;
 int result;
 
  cin >> i >> j;
  cin >> a >> b;
  
  result = (i-a)*(j-b)
  
  cout << result;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:23: error: expected ';' before 'cout'
   14 |   result = (i-a)*(j-b)
      |                       ^
      |                       ;
   15 | 
   16 |   cout << result;
      |   ~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main()
{
 int i,j;
 int a,b;
 int result;
 
  cin >> i >> j;
  cin >> a >> b;
  
  result = (i-a)*(j-b)
  
  cout << result;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:23: error: expected ';' before 'cout'
   14 |   result = (i-a)*(j-b)
      |                       ^
      |                       ;
   15 | 
   16 |   cout << result;
      |   ~~~~
Language: C++

#include <bits/stdc++.h>

int main{
 int i,j;
 int a,b;
 
  cin >> i >> j;
  cin >> a >> b;
  
  cout << (i-a)*(j-b);
}

Compiler output:
a.cc:3:5: error: cannot declare '::main' to be a global variable
    3 | int main{
      |     ^~~~
a.cc:4:2: error: expected primary-expression before 'int'
    4 |  int i,j;
      |  ^~~
a.cc:4:2: error: expected '}' before 'int'
a.cc:3:9: note: to match this '{'
    3 | int main{
      |         ^
a.cc:7:3: error: 'cin' does not name a type
    7 |   cin >> i >> j;
      |   ^~~
a.cc:8:3: error: 'cin' does not name a type
    8 |   cin >> a >> b;
      |   ^~~
a.cc:10:3: error: 'cout' does not name a type
   10 |   cout << (i-a)*(j-b);
      |   ^~~~
a.cc:11:1: error: expected declaration before '}' token
   11 | }
      | ^
Language: C++

#include<iostream>

int main() {
  int H, W, h, w;
  cin >> H >> W >> h >> w;
  cout << (H-h)*(W-w) << endl;
}

Compiler output:
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 >> H >> W >> h >> w;
      |   ^~~
      |   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:6:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 |   cout << (H-h)*(W-w) << 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:6:26: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    6 |   cout << (H-h)*(W-w) << 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>

int main(){
    int H,W;
    int h,w;
    cin >> H >> W;
    cin >> h >> w;
    cout << H * W - h * w << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |     cin >> H >> W;
      |     ^~~
      |     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:8:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |     cout << H * W - h * w << 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:8:30: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 |     cout << H * W - h * w << 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>
#include<stdlib.h>
int main{
	int a,b;
    scanf("%d%d",&a,&b);
    int c,d;
    scanf("%d%d",&c,&d);
    printf("%d\n",(a-c)*(b-d));
}

Compiler output:
main.c:3:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
    3 | int main{
      |         ^
Language: C

#include<stdio.h>
int main{
	int a,b;
    scanf("%d%d",&a,&b);
    int c,d;
    scanf("%d%d",&c,&d);
    printf("%d\n",(a-c)*(b-d));
}

Compiler output:
main.c:2:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
    2 | int main{
      |         ^
Language: Java

#include<stdio.h>
int main{
	int a,b;
    scanf("%d%d",&a,&b);
    int c,d;
    scanf("%d%d",&c,&d);
    printf("%d\n",(a-c)*(b-d));
}

Compiler output:
Main.java:1: error: illegal character: '#'
#include<stdio.h>
^
Main.java:1: error: class, interface, enum, or record expected
#include<stdio.h>
        ^
Main.java:4: error: class, interface, enum, or record expected
    scanf("%d%d",&a,&b);
    ^
Main.java:5: error: class, interface, enum, or record expected
    int c,d;
    ^
Main.java:6: error: class, interface, enum, or record expected
    scanf("%d%d",&c,&d);
    ^
Main.java:7: error: class, interface, enum, or record expected
    printf("%d\n",(a-c)*(b-d));
    ^
Main.java:8: error: class, interface, enum, or record expected
}
^
7 errors
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define int long long
int MOD = (int)1e9 + 7;
int INF = (int)2e18;
// Comment out below and program paste

#include "UnionFind.hpp"
#include "power.hpp"

signed main() {
    int H, W, h, w;
    cin >> H >> W >> h >> w;
    int ans = H * W;
    ans -= h * W;
    ans -= w * H;
    ans += h * w;
    cout << ans << endl;
}

Compiler output:
a.cc:8:10: fatal error: UnionFind.hpp: No such file or directory
    8 | #include "UnionFind.hpp"
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>

int main(){
    int H,W,h,w;
    int S;
    cin >> H >> W >> h >> w;

    S = H * W - (H * w + W * h) - h * w;

    cout << S << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |     cin >> H >> W >> h >> w;
      |     ^~~
      |     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:10:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   10 |     cout << S << 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:10:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   10 |     cout << S << 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>

void main(){
    int H,W,h,w;
    int S;
    cin >> H >> W >> h >> w;

    S = H * W - (H * w + W * h) - h * w;

    cout << S << endl;
}


Compiler output:
a.cc:3:1: error: '::main' must return 'int'
    3 | void main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |     cin >> H >> W >> h >> w;
      |     ^~~
      |     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:10:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   10 |     cout << S << 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:10:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   10 |     cout << S << 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<bits/stdc++.h>
using namespace std;
int main(){
  int N,M,C,n,m;
  cin >> N >> M >> C;
  int A[n][m];
  for(n = 0; n<N; n++){
    for(m = 0; m<M; m++){
      cin >> a[m][n];
    }
  }
  int B[n];
  for(n = 0; n<N; n++){
    cin >> B[n];
  }
  int ans = 0;
  int L[n] = 0;
  for(m = 0; m<M; m++){
    L[n] += A[n][m]*B[n];
  }
  for(n = 0; n<N; n++){
    if(L[n]>C){
      ans++;
    }
  }
  cout << ans << endl;
    

Compiler output:
a.cc: In function 'int main()':
a.cc:9:14: error: 'a' was not declared in this scope
    9 |       cin >> a[m][n];
      |              ^
a.cc:17:14: error: array must be initialized with a brace-enclosed initializer
   17 |   int L[n] = 0;
      |              ^
a.cc:26:23: error: expected '}' at end of input
   26 |   cout << ans << endl;
      |                       ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: Java

import java.util.*;

public class Sample {
  	public static void main(String... args) {
      	Scanner sc = new Scanner(System.in);
      	int H = sc.nextInt();
      	int W = sc.nextInt();
      	int h = sc.nextInt();
      	int w = sc.nextInt();
      	System.out.println(H*W - H*w - h*W + h*w);
    }
}

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

#include<bits/stdc++.h>
using namespace std;
int main() {
  int h,w,H,W;
  cin >> h >> w >> H >> W;
  cout << H*W - H*w - W*h + h*w << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:6:41: error: expected '}' at end of input
    6 |   cout << H*W - H*w - W*h + h*w << endl;
      |                                         ^
a.cc:3:12: note: to match this '{'
    3 | int main() {
      |            ^
Language: C

#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <ctype.h>
#include <stdint.h>
#include <string.h>
#include <wchar.h>

#define N_MAX (100)
#define P_MAX (100)
#define DP_ARRAY_SIZE (N_MAX * P_MAX / 32 + 1)

#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define ABS(a) ((a) < 0 ? -(a) : (a))
#define ABSS(a, b) ((a) > (b) ? (a) - (b) : (b) - (a))

int compare_f(const void *a, const void *b) {
	return *((size_t *)a) < *((size_t *)b) ? -1 : 1;
}

static size_t comb(const size_t n, const size_t r) {
	size_t result = 1;

	for (size_t i = 0; i < r; i++) {
		result *= n - i;
		result /= i + 1;
	}

	return result;
}

static uint64_t gcd(uint64_t m, uint64_t n)
{
	uint64_t temp;

	while (m%n != 0) {
		temp = n;
		n = m % n;
		m = temp;
	}

	return n;
}

int main(void) {
	size_t H, W, h, w;

	scanf("%zu %zu\n%zu %zu", &H, &W, &h, &w);

	printf("%zu\n", (H - h)*(W - w);

	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:52:40: error: expected ')' before ';' token
   52 |         printf("%zu\n", (H - h)*(W - w);
      |               ~                        ^
      |                                        )
main.c:54:18: error: expected ';' before '}' token
   54 |         return 0;
      |                  ^
      |                  ;
   55 | }
      | ~
Language: C

#include(stdio.h)
int main(void){
  int W,H,w,h;
  int i;
  scanf("%d %d",&H,&W);
  scanf("%d %d",&h,&w);
  i=W*H-w*H-W*h+w*h;
  printf("%d",i);
  return 0;
}


Compiler output:
main.c:1:9: error: #include expects "FILENAME" or <FILENAME>
    1 | #include(stdio.h)
      |         ^
main.c: In function 'main':
main.c:5:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    5 |   scanf("%d %d",&H,&W);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #include(stdio.h)
main.c:5:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    5 |   scanf("%d %d",&H,&W);
      |   ^~~~~
main.c:5:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:8:3: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    8 |   printf("%d",i);
      |   ^~~~~~
main.c:8:3: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:8:3: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:8:3: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: Java

package test;

import java.util.Scanner;

public class C {

	public static void main(String[] args){
		Scanner scan = new Scanner(System.in);
		int H = scan.nextInt();
		int W = scan.nextInt();
		int h = scan.nextInt();
		int w = scan.nextInt();
		System.out.println((H -h)*(W - w));

		scan.close();
	}
}

Compiler output:
Main.java:5: error: class C is public, should be declared in a file named C.java
public class C {
       ^
1 error
Language: C++

#include <cstdio>
using namespace std;
int main(){
  int H, W, h, w, ans;
  
  cin>>H>>W>>h>>w;
  ans = H * W - (h * W + H * w - h * w);
  
  cout << ans << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin>>H>>W>>h>>w;
      |   ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include <cstdio>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:9:3: error: 'cout' was not declared in this scope
    9 |   cout << ans << endl;
      |   ^~~~
a.cc:9:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:9:18: error: 'endl' was not declared in this scope
    9 |   cout << ans << endl;
      |                  ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include <cstdio>
  +++ |+#include <ostream>
    2 | using namespace std;
Language: Java

import java.util.Scanner;

public class Main121A {

    public static void main(String[] args) {
        final Scanner scanner = new Scanner(System.in);
        int H = Integer.parseInt(scanner.next());
        int W = Integer.parseInt(scanner.next());
        int h = Integer.parseInt(scanner.next());
        int w = Integer.parseInt(scanner.next());

        final int result = H * W - (h * W) - (w * (H - h));
        System.out.println(result);
    }
}


Compiler output:
Main.java:3: error: class Main121A is public, should be declared in a file named Main121A.java
public class Main121A {
       ^
1 error
Language: C++

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

int main(){
  int W,H,w,h;

  cin>>H>>W;
  cin>>h>>w;
  
  int val;
  vall = (H-h)*(W-w);
  cont<<val<<endl;
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: 'vall' was not declared in this scope; did you mean 'val'?
   11 |   vall = (H-h)*(W-w);
      |   ^~~~
      |   val
a.cc:12:3: error: 'cont' was not declared in this scope; did you mean 'const'?
   12 |   cont<<val<<endl;
      |   ^~~~
      |   const
Language: C++

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

int main(){
  int W,H,w,h;

  cin>>H>>W;
  cin>>h>>w;
  
  int val;
  vall = (H-h)*(W-w);
  cont<<val<<endl;
  
  
}


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

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

int main(){
  int W,H,w,h;

  cin>>H>>W;
  cin>>h>>w;
  
  int val;
  vall = (H-h)*(W-w);
  cont<<val<<endl;
  
  
}

Compiler output:
a.cc:1:11: fatal error:  bits / stdc ++. h : No such file or directory
    1 | # include < bits / stdc ++. h >
      |           ^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bita/stdc++.h>
using namespace std;
int main(){
  int H,W,h,w;
  cin>>H>>W>>h>>w;
  cout<<(H*W)-(H*w+h*W-w*h)<<endl;
  return 0;
}

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

#include<stdio.h>

int main(){
  	int H, W, h, w;
	scanf("%d %d", &H, &W);
  	scanf("%d %d", &h, &w);
	int s;
  	s = (H - h) * (W - w);
  	printf("%d", s)
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:24: error: expected ';' before '}' token
    9 |         printf("%d", s)
      |                        ^
      |                        ;
   10 | }
      | ~
Language: C++

#include<iostream>
suing namespace std;
int main(){
  int a,b,c,d;
  cin >> a >> b >> c >> d;
  cout << (a-c) * (b-d) << endl;
}

Compiler output:
a.cc:2:1: error: 'suing' does not name a type
    2 | suing 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 >> b >> c >> d;
      |   ^~~
      |   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:6:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 |   cout << (a-c) * (b-d) << 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:6:28: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    6 |   cout << (a-c) * (b-d) << 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>
#include<stdlib.h>

typedef struct {
  	int A;
  	int B;
} shop_t;

int cmp(const void*,const void*);

int
cmp(const void *a, const void *b){
	return ((shop_t *)a->A-(shop_t *)b->B);
 };

int
main()
{
  	int n,m;
  	int get;
  	int i;
  	long long ans;
  
  	scanf("%d %d",&n,&m);
  	shop_t list[n];
  	for(i=0;i<n;i++){
      	scanf("%d %d",&list[i].A,&list[i].B);
    }
  	
  	qsort(list,N,sizeof(shop_t),cmp);
  
  	ans =0;
  	for(get=0;get!=m;get++){
      	for(i=0;list[i].B==0;){ i++ }
      	ans += list[i].A;
      	list[i].B--;
      
      return 0;
    }
  

Compiler output:
main.c: In function 'cmp':
main.c:13:28: warning: dereferencing 'void *' pointer
   13 |         return ((shop_t *)a->A-(shop_t *)b->B);
      |                            ^~
main.c:13:28: error: request for member 'A' in something not a structure or union
main.c:13:43: warning: dereferencing 'void *' pointer
   13 |         return ((shop_t *)a->A-(shop_t *)b->B);
      |                                           ^~
main.c:13:43: error: request for member 'B' in something not a structure or union
main.c: In function 'main':
main.c:30:20: error: 'N' undeclared (first use in this function)
   30 |         qsort(list,N,sizeof(shop_t),cmp);
      |                    ^
main.c:30:20: note: each undeclared identifier is reported only once for each function it appears in
main.c:34:36: error: expected ';' before '}' token
   34 |         for(i=0;list[i].B==0;){ i++ }
      |                                    ^~
      |                                    ;
main.c:39:5: error: expected declaration or statement at end of input
   39 |     }
      |     ^
Language: Java

import java.util.Scanner;

public class WhiteCells {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int H = sc.nextInt();
		int W = sc.nextInt();
		int h = sc.nextInt();
		int w = sc.nextInt();

		if (h >= 0) {
			H = H - h;
		}
		if (w >= 0) {
			W = W - w;
		}
		System.out.println(H * W);

	}

}


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

#include <bits/stdc++.h>
using namespace std;
int main() {
      int H, W; cin >> H >> W;
     int h, w; cin >> h >> w;
      int ans = (H - h) * (W -  w);
    cout << ans << endl;
}


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

#include <bits/stdc++.h>
using namespace std;
int main() {
      int H, W; cin >> H >> W;
     int h, w; cin >> h >> w;
      int ans = (H - h) * (W - w );
    cout << ans << endl;
}

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

#include <stdio.h>
int main(void){
	int H,W,a,b;
	scanf("%d %d",&H,&W);
	scanf("%d %d",&a,&b);
	//行列cを入力に基づいて定義して初期化する
	int c[H][W];
//	for(int i=0;i<=H;++i){
//		for(int j=0;i<=W;++j){
//			c[i][j]=0;
//		}
//	}
	int count
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			if(i==(--a) || j==(--b)){
//				c[i][j]=1;
				++count;
			}
		}
	}
	printf("%d\n",(++H)*(++W)-count);
}

Compiler output:
main.c: In function 'main':
main.c:14:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'for'
   14 |         for(int i=0;i<=H;++i){
      |         ^~~
main.c:18:35: error: 'count' undeclared (first use in this function)
   18 |                                 ++count;
      |                                   ^~~~~
main.c:18:35: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio>
int main(){
  unsigned A, B;
  scanf("%d", &A);
  scanf("%d", &B);
  printf("%d", ((((B - A)>>1)+1)&1)? (B&1)? 1:B^(A&1) : (B&1)? 0:B^((~A)&1));
}

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

#include <stdio.h>
int main(void){
	int h,w,a,b;
	scanf("%d %d",&h,&w);
	scanf("%d %d",&a,&b);
	//行列cを入力に基づいて定義して初期化する
	int c[H][W];
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			c[i][j]=0;
		}
	}
	
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			if(i==(--a) || j==(--b)){
				c[i][j]=1;
			}
		}
	}
	
	int count;
	count=0;
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			if(c[i][j]==1);
			++count;
		}
	}
	printf("%d\n",(++H)*(++W)-count);
}

Compiler output:
main.c: In function 'main':
main.c:7:15: error: 'H' undeclared (first use in this function)
    7 |         int c[H][W];
      |               ^
main.c:7:15: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:18: error: 'W' undeclared (first use in this function)
    7 |         int c[H][W];
      |                  ^
Language: C

#include <stdio.h>
int main(void){
	int h,w,a,b;
	scanf("%d %d",h,w);
	scanf("%d %d",a,b);
	//行列cを入力に基づいて定義して初期化する
	int c[H][W];
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			c[i][j]=0;
		}
	}
	
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			if(i==(--a) || j==(--b)){
				c[i][j]=1;
			}
		}
	}
	
	int count;
	count=0;
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			if(c[i][j]==1);
			++count;
		}
	}
	printf("%d",(++H)*(++W)-count);
}

Compiler output:
main.c: In function 'main':
main.c:7:15: error: 'H' undeclared (first use in this function)
    7 |         int c[H][W];
      |               ^
main.c:7:15: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:18: error: 'W' undeclared (first use in this function)
    7 |         int c[H][W];
      |                  ^
Language: C

#include <stdio.h>
int main(void){
	int H,W;
	scanf("%d %d",H,W);
	scanf("%d %d",a,b);
	//行列cを入力に基づいて定義して初期化する
	int c[H][W];
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			c[i][j]=0;
		}
	}
	
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			if(i==(--a) || j==(--b)){
				c[i][j]=1;
			}
		}
	}
	
	int count;
	count=0;
	for(int i=0;i<=H;++i){
		for(int j=0;i<=W;++j){
			if(c[i][j]==1);
			++count;
		}
	}
	printf("%d",(++H)*(++W)-count);
}

Compiler output:
main.c: In function 'main':
main.c:5:23: error: 'a' undeclared (first use in this function)
    5 |         scanf("%d %d",a,b);
      |                       ^
main.c:5:23: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:25: error: 'b' undeclared (first use in this function)
    5 |         scanf("%d %d",a,b);
      |                         ^
Language: C

#include<stdio.h>

int
main()
{
  	int H,W,h,w;
  	int answer;
  	scanf("%d %d",&H,&W);
  	scanf("%d %d",&h,&w);
  	answer=H*W-h*W-w*H+hw;
  	printf("%d\n",answer);

  	return 0;
}
  	
  
  
  

Compiler output:
main.c: In function 'main':
main.c:10:28: error: 'hw' undeclared (first use in this function); did you mean 'w'?
   10 |         answer=H*W-h*W-w*H+hw;
      |                            ^~
      |                            w
main.c:10:28: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include<iostream>;main(){int H,W,h,w;std::cin>>H>>W>>h>>w;std::cout<<(H-h)*(W-w);}

Compiler output:
a.cc:1:19: warning: extra tokens at end of #include directive
    1 | #include<iostream>;main(){int H,W,h,w;std::cin>>H>>W>>h>>w;std::cout<<(H-h)*(W-w);}
      |                   ^
/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>
main(){a,b,h,w;std::cin>>a>>b>>h>>w;std::cout<<(a-h)*(b-w);}


Compiler output:
a.cc:2:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    2 | main(){a,b,h,w;std::cin>>a>>b>>h>>w;std::cout<<(a-h)*(b-w);}
      | ^~~~
a.cc: In function 'int main()':
a.cc:2:8: error: 'a' was not declared in this scope
    2 | main(){a,b,h,w;std::cin>>a>>b>>h>>w;std::cout<<(a-h)*(b-w);}
      |        ^
a.cc:2:10: error: 'b' was not declared in this scope
    2 | main(){a,b,h,w;std::cin>>a>>b>>h>>w;std::cout<<(a-h)*(b-w);}
      |          ^
a.cc:2:12: error: 'h' was not declared in this scope
    2 | main(){a,b,h,w;std::cin>>a>>b>>h>>w;std::cout<<(a-h)*(b-w);}
      |            ^
a.cc:2:14: error: 'w' was not declared in this scope
    2 | main(){a,b,h,w;std::cin>>a>>b>>h>>w;std::cout<<(a-h)*(b-w);}
      |              ^
Language: C++

#include<iostream>
main(){int a,b,h,w;std::cin>>a>>b>>h>>w;cout<<(a-h)*(b-w);}


Compiler output:
a.cc:2:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    2 | main(){int a,b,h,w;std::cin>>a>>b>>h>>w;cout<<(a-h)*(b-w);}
      | ^~~~
a.cc: In function 'int main()':
a.cc:2:41: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    2 | main(){int a,b,h,w;std::cin>>a>>b>>h>>w;cout<<(a-h)*(b-w);}
      |                                         ^~~~
      |                                         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
      |                  ^~~~
Language: C++

#include<iostream>
main(){int H,W,h,w;cin>>H>>W>>h>>w;cout<<(H-h)*(W-w);}


Compiler output:
a.cc:2:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    2 | main(){int H,W,h,w;cin>>H>>W>>h>>w;cout<<(H-h)*(W-w);}
      | ^~~~
a.cc: In function 'int main()':
a.cc:2:20: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    2 | main(){int H,W,h,w;cin>>H>>W>>h>>w;cout<<(H-h)*(W-w);}
      |                    ^~~
      |                    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:2:36: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    2 | main(){int H,W,h,w;cin>>H>>W>>h>>w;cout<<(H-h)*(W-w);}
      |                                    ^~~~
      |                                    std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~