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

#include <stdio.h>
int main(){
cher a[4];
int b=0;
scanf("%s",a);
for(int i=0;i<4;i++){
if(cher a[i]==2){
b++;
}
}
printf("%d",&b);
}


Compiler output:
main.c: In function 'main':
main.c:3:1: error: unknown type name 'cher'; did you mean 'char'?
    3 | cher a[4];
      | ^~~~
      | char
main.c:7:4: error: 'cher' undeclared (first use in this function); did you mean 'char'?
    7 | if(cher a[i]==2){
      |    ^~~~
      |    char
main.c:7:4: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:8: error: expected ')' before 'a'
    7 | if(cher a[i]==2){
      |   ~    ^~
      |        )
Language: C

#include <stdio.h>
int main(){
string a[4];
int b=0;
scanf("%d",a);
for(int i=0;i<4;i++){
if(string a[i]==2){
b++;
}
}
printf("%d",&b);
}


Compiler output:
main.c: In function 'main':
main.c:3:1: error: unknown type name 'string'; did you mean 'stdin'?
    3 | string a[4];
      | ^~~~~~
      | stdin
main.c:7:4: error: 'string' undeclared (first use in this function); did you mean 'stdin'?
    7 | if(string a[i]==2){
      |    ^~~~~~
      |    stdin
main.c:7:4: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:10: error: expected ')' before 'a'
    7 | if(string a[i]==2){
      |   ~      ^~
      |          )
Language: C

#include<stdio.h>

int main(void){
    int N,cnt=0,i;

    scanf("%d",&N);

    for(i=0; i<4; i++){
        N = N%10;
        if(N/2=1){
            cnt++;
        }
    }

    printf("%d\n",cnt);

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:15: error: lvalue required as left operand of assignment
   10 |         if(N/2=1){
      |               ^
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main(){
string a;
int b=0;
cin>>a;
for(int i=0;i<4;i++){
if(string a[i]==2){
b++;
}
}
cout<<b<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: condition declares an array
    9 | if(string a[i]==2){
      |           ^
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main(){
string a;
int b=0;
cin>>a;
for(int i=0;i<4;i++){
if(string a[i]==2)
b++;
}
cout<<b<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: condition declares an array
    9 | if(string a[i]==2)
      |           ^
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main(){
string a
int b=0;
cin>>a;
for(int i=0;i<4;i++){
if(string a[i]==2)
b++;
}
cout<<b<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:1: error: expected initializer before 'int'
    6 | int b=0;
      | ^~~
a.cc:7:6: error: 'a' was not declared in this scope
    7 | cin>>a;
      |      ^
a.cc:9:11: error: condition declares an array
    9 | if(string a[i]==2)
      |           ^
a.cc:10:1: error: 'b' was not declared in this scope
   10 | b++;
      | ^
a.cc:12:7: error: 'b' was not declared in this scope
   12 | cout<<b<<endl;
      |       ^
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main(){
string a
int b;
cin>>a;
for(int i=0;i<4;i++){
if(string a[i]==2)
b++;
}
cout<<b<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:1: error: expected initializer before 'int'
    6 | int b;
      | ^~~
a.cc:7:6: error: 'a' was not declared in this scope
    7 | cin>>a;
      |      ^
a.cc:9:11: error: condition declares an array
    9 | if(string a[i]==2)
      |           ^
a.cc:10:1: error: 'b' was not declared in this scope
   10 | b++;
      | ^
a.cc:12:7: error: 'b' was not declared in this scope
   12 | cout<<b<<endl;
      |       ^
Language: C++

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

string N;
cin >> N;

int K = 0;

for (int i = 0; i < N.size(); i++;) {
   if (N.at(i) == "2") {
     K++
   }
}
cout << K << endl;

Compiler output:
a.cc:5:1: error: 'cin' does not name a type
    5 | cin >> N;
      | ^~~
a.cc:9:1: error: expected unqualified-id before 'for'
    9 | for (int i = 0; i < N.size(); i++;) {
      | ^~~
a.cc:9:17: error: 'i' does not name a type
    9 | for (int i = 0; i < N.size(); i++;) {
      |                 ^
a.cc:9:31: error: 'i' does not name a type
    9 | for (int i = 0; i < N.size(); i++;) {
      |                               ^
a.cc:9:35: error: expected unqualified-id before ')' token
    9 | for (int i = 0; i < N.size(); i++;) {
      |                                   ^
a.cc:14:1: error: 'cout' does not name a type
   14 | cout << K << endl;
      | ^~~~
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main(){
string a(4,'0');
int b;
cin>>a;
for(int i=0;i<4;i++){
if(string a[i]==2)
b++;
}
cout<<b<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: condition declares an array
    9 | if(string a[i]==2)
      |           ^
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main(){
string a(4,'0');
int b;
cin>>a;
for(int=i;i<4;i++){
if(string a[i]==2)
b++;
}
cout<<b<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: expected unqualified-id before '=' token
    8 | for(int=i;i<4;i++){
      |        ^
a.cc:8:8: error: expected ';' before '=' token
    8 | for(int=i;i<4;i++){
      |        ^
      |        ;
a.cc:8:8: error: expected primary-expression before '=' token
a.cc:8:9: error: 'i' was not declared in this scope
    8 | for(int=i;i<4;i++){
      |         ^
a.cc:8:14: error: expected ')' before ';' token
    8 | for(int=i;i<4;i++){
      |    ~         ^
      |              )
a.cc:8:15: error: 'i' was not declared in this scope
    8 | for(int=i;i<4;i++){
      |               ^
Language: C++

#include<iostream>
#include<algorithm>
#include<math.h>
#include<string>
using namespace std;

#define FOR(i,a,b) for(long long int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define ci cin >>
#define co cout <<
long long int N, M, H, W, han;
long long int A[1000], B[1000];
string S;
bool answ = true;
int ans = 0;
int main() {
	ci N;
	REP(i, N)ci A[i];
	REP(i, N) {
		if (A[i] % 2 == 1)han++;
	}
	REP(i. N){
			if (A[i] > 1)answ = false;
	}
	if (N % 2 == 1)ans = 1;
	if (han > 0  && ans == 0)ans = 1;
	if (han > 0 && ans == 1)ans = 0;
	
	if (ans == 0 || answ == true)co "first";
	if (ans == 1)co "second";
	return 0;

	
}

Compiler output:
a.cc:22:17: error: macro "REP" requires 2 arguments, but only 1 given
   22 |         REP(i. N){
      |                 ^
a.cc:8:9: note: macro "REP" defined here
    8 | #define REP(i,n)  FOR(i,0,n)
      |         ^~~
a.cc: In function 'int main()':
a.cc:22:9: error: 'REP' was not declared in this scope
   22 |         REP(i. N){
      |         ^~~
Language: C++

#include <iostream>
#include <string>

int main()
{
   std::string N;
   std::cin >> N;
   std::cout << std::count(N.cbegin(), N.cend(), '2') << std::endl;
   return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:22: error: 'count' is not a member of 'std'; did you mean 'cout'?
    8 |    std::cout << std::count(N.cbegin(), N.cend(), '2') << std::endl;
      |                      ^~~~~
      |                      cout
Language: C

#include <stdio.h>
int main()
{
	char num[4];
  	int count2 = 0;
  	scanf("%s", num);
  	for (int i = 0; i < 4; i++){
    	if (s[i] == '2'){
        	count2++;
        }
    }
  	printf("%d", count2);
}

Compiler output:
main.c: In function 'main':
main.c:8:13: error: 's' undeclared (first use in this function)
    8 |         if (s[i] == '2'){
      |             ^
main.c:8:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
main(){
  char N[4];
  scanf("%s",N);
  if(N[0]==2&&N[1]==2&&N[2]==2&&N[3]==2)printf("4\n");
  else if(N[0]!=2&&N[1]!=2&&N[2]!=2&&N[3]!=2)printf("0\n");
  else if((N[0]==2&&N[1]!=2&&N[2]!=2&&N[3]!=2) | | (N[0]!=2&&N[1]==2&&N[2]!=2&&N[3]!=2) || (N[0]!=2&&N[1]!=2&&N[2]==2&&N[3]!=2)||(N[0]!=2&&N[1]!=2&&N[2]!=2&&N[3]==2))printf("1\n");

 else if((N[0]==2&&N[1]==2&&N[2]==2&&N[3]!=2)||(N[0]==2&&N[1]==2&&N[2]!=2&&N[3]==2)||(N[0]==2&&N[1]!=2&&N[2]==2&&N[3]==2)||(N[0]!=2&&N[1]==2&&N[2]==2&&N[3]==2))printf("3\n");

else printf("2\n");

return 0;
}




Compiler output:
main.c:2:1: error: return type defaults to 'int' [-Wimplicit-int]
    2 | main(){
      | ^~~~
main.c: In function 'main':
main.c:7:50: error: expected expression before '|' token
    7 |   else if((N[0]==2&&N[1]!=2&&N[2]!=2&&N[3]!=2) | | (N[0]!=2&&N[1]==2&&N[2]!=2&&N[3]!=2) || (N[0]!=2&&N[1]!=2&&N[2]==2&&N[3]!=2)||(N[0]!=2&&N[1]!=2&&N[2]!=2&&N[3]==2))printf("1\n");
      |                                                  ^
Language: C++

int main(){
  string s;
  cin >> s;
  int l=s.size();
  int ans=0;
  for(int i=0;i<l;i++){
    if(s[i] == '2') ans++;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:2:3: error: 'string' was not declared in this scope
    2 |   string s;
      |   ^~~~~~
a.cc:3:3: error: 'cin' was not declared in this scope
    3 |   cin >> s;
      |   ^~~
a.cc:3:10: error: 's' was not declared in this scope
    3 |   cin >> s;
      |          ^
a.cc:9:3: error: 'cout' was not declared in this scope
    9 |   cout << ans << endl;
      |   ^~~~
a.cc:9:18: error: 'endl' was not declared in this scope
    9 |   cout << ans << endl;
      |                  ^~~~
Language: C++

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

int main(int argc, char const *argv[])
{
    string A;
    cin >> A;
    cout << count(A.begin, A.end, 2) << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:8:18: error: no matching function for call to 'count(<unresolved overloaded function type>, <unresolved overloaded function type>, int)'
    8 |     cout << count(A.begin, A.end, 2) << endl;
      |             ~~~~~^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:4025:5: note: candidate: 'template<class _IIter, class _Tp> typename std::iterator_traits< <template-parameter-1-1> >::difference_type std::count(_IIter, _IIter, const _Tp&)'
 4025 |     count(_InputIterator __first, _InputIterator __last, const _Tp& __value)
      |     ^~~~~
/usr/include/c++/14/bits/stl_algo.h:4025:5: note:   template argument deduction/substitution failed:
a.cc:8:18: note:   couldn't deduce template parameter '_IIter'
    8 |     cout << count(A.begin, A.end, 2) << endl;
      |             ~~~~~^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:101:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator, class _Tp> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, typename std::iterator_traits<_II>::difference_type> std::count(_ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, const _Tp&)'
  101 | count(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value);
      | ^~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:101:1: note:   candidate expects 4 arguments, 3 provided
Language: C++

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

int intpow(int x,int y){
  double a=x,b=y;
  return pow(a,b);
}//(x,y) xをy乗する

int intfabs(int x){
  double a=x;
  return fabs(a);
}//(x) の絶対値

int in(){
  int a;
  cin >> a;
  return a;
}//int型関数の受け取り

void forin(int* x,int y){
  for (int i=0;i<y;i++){
    cin >> x[i];
  }
}//配列の受け取り

main(){
  string n;
  int ans=0;
  cin >> n;
  for (int i=0;i<4;i++){
    if (n[i]=='2') ans++;
  }
  cout << ans << ensl;
}


Compiler output:
a.cc:26:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   26 | main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:33:18: error: 'ensl' was not declared in this scope
   33 |   cout << ans << ensl;
      |                  ^~~~
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main(void){
    // Your code here!
    string n;
    cin >> n;
    
    int count = 0;
    int i = 0;
    
    for (i = 0 ; i < size(n); ++i)
        if (n[i] == '2')
            count = count + 1;
        
    
    
    cout << count << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:18:27: error: expected '}' at end of input
   18 |     cout << count << endl;
      |                           ^
a.cc:4:15: note: to match this '{'
    4 | int main(void){
      |               ^
Language: C++

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

int main(){
 string s;
 cin >> s;
for(int i=0;i<s.size();i++){
 if(s[i]=='2') cnt++;
 //else if(cnt>0){cnt=0;a++;}
}
 cout << cnt << endl;
 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: 'cnt' was not declared in this scope; did you mean 'int'?
    8 |  if(s[i]=='2') cnt++;
      |                ^~~
      |                int
a.cc:11:10: error: 'cnt' was not declared in this scope; did you mean 'int'?
   11 |  cout << cnt << endl;
      |          ^~~
      |          int
Language: C++

#include <iostream>
using namespace std;
int main(void){
    // Your code here!
    string n;
    cin >> n;
    
    int count = 0;
    int i = 0;
    
    for (i = 0 ; i < size(n); ++i)
        if (n[i] == '2')
            count = count + 1;
        
    
    
    cout << count << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:17:27: error: expected '}' at end of input
   17 |     cout << count << endl;
      |                           ^
a.cc:3:15: note: to match this '{'
    3 | int main(void){
      |               ^
Language: C++

#include <iostream>
#include <cmath>
#include <cstring>
using namespace std;

int main()
{/*
    int n,h,w,a[1000],b[1000],sum = 0;

    cin >> n >>h>>w;
    for(int i = 0;i<n;i++)
    {
        cin >> a[i] >> b[i];
        if(a[i]>=h && b[i]>=w)
        {
            sum++;
        }
    }


*/

    char a[10000];
    int sum = 0;
    cin >> a;
    for(int i = 0;strlen(a) == i+1;i++)
    {
        if (a[i] == "2")
        {
            sum++;
        }
    }
    cout << sum << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:18: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   28 |         if (a[i] == "2")
      |             ~~~~~^~~~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
int u=0,i,j=0,k,l,N;
cout<<"Enter the number \n";
cin>>N;
while(k>0)
{
k=N%10;
j++;
}
if(j!==3)
{
exit;}
for(i=0;i<j;i++)
{
l=N%10;
if(l==2)
{++u;}
}
cout<<u;
return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:13:7: error: expected primary-expression before '=' token
   13 | if(j!==3)
      |       ^
Language: C++

#include <iostream>
#include <cmath>
#include <cstring>
using namespace std;

int main()
{/*
    int n,h,w,a[1000],b[1000],sum = 0;

    cin >> n >>h>>w;
    for(int i = 0;i<n;i++)
    {
        cin >> a[i] >> b[i];
        if(a[i]>=h && b[i]>=w)
        {
            sum++;
        }
    }


*/

    char a;
    int sum = 0;
    cin >> a;
    for(int i = 0;strlen(a) == i+1;i++)
    {
        if (a[i] == 2)
        {
            sum++;
        }
    }
    cout << sum << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:26: error: invalid conversion from 'char' to 'const char*' [-fpermissive]
   26 |     for(int i = 0;strlen(a) == i+1;i++)
      |                          ^
      |                          |
      |                          char
In file included from /usr/include/c++/14/cstring:43,
                 from a.cc:3:
/usr/include/string.h:407:35: note:   initializing argument 1 of 'size_t strlen(const char*)'
  407 | extern size_t strlen (const char *__s)
      |                       ~~~~~~~~~~~~^~~
a.cc:28:14: error: invalid types 'char[int]' for array subscript
   28 |         if (a[i] == 2)
      |              ^
Language: C++

import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String ns = sc.next();
        int count = 0;
        for(int i = 0; i < 4; i++){
            if(ns.charAt(i) == '2') count++;
        }
        
        System.out.println(count);
    }
}


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

#include <iostream>
using namespace stdl
  
  int main(){
  int twos=0;
  for(int i=0;i<4;i++){
    char c;
    cin>>c;
    if(c=='2'){
      twos++;
    }
    
  }
  cout<<twos;
 return 0; 
}

Compiler output:
a.cc:2:17: error: 'stdl' is not a namespace-name
    2 | using namespace stdl
      |                 ^~~~
a.cc:2:21: error: expected ';' before 'int'
    2 | using namespace stdl
      |                     ^
      |                     ;
    3 | 
    4 |   int main(){
      |   ~~~                
a.cc: In function 'int main()':
a.cc:8:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |     cin>>c;
      |     ^~~
      |     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:14:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   14 |   cout<<twos;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include <iostream>
#include <cmath>
using namespace std;

int main()
{/*
    int n,h,w,a[1000],b[1000],sum = 0;

    cin >> n >>h>>w;
    for(int i = 0;i<n;i++)
    {
        cin >> a[i] >> b[i];
        if(a[i]>=h && b[i]>=w)
        {
            sum++;
        }
    }


*/

    char a;
    int sum = 0;
    cin >> a;
    for(int i = 0;strlen(a) == i+1;i++)
    {
        if (a[i] == 2)
        {
            sum++;
        }
    }
    cout << sum << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:19: error: 'strlen' was not declared in this scope
   25 |     for(int i = 0;strlen(a) == i+1;i++)
      |                   ^~~~~~
a.cc:3:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    2 | #include <cmath>
  +++ |+#include <cstring>
    3 | using namespace std;
a.cc:27:14: error: invalid types 'char[int]' for array subscript
   27 |         if (a[i] == 2)
      |              ^
Language: C++

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

int main() {

	string N;
	cin >> N;

	int t = 0;

	if (N[0] == 2) {
		t++
	}

	if (N[1] == 2) {
		t++
	}

	if (N[2] == 2) {
		t++
	}

	if (N[3] == 2) {
		t++
	}

	cout << t << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:20: error: expected ';' before '}' token
   12 |                 t++
      |                    ^
      |                    ;
   13 |         }
      |         ~           
a.cc:16:20: error: expected ';' before '}' token
   16 |                 t++
      |                    ^
      |                    ;
   17 |         }
      |         ~           
a.cc:20:20: error: expected ';' before '}' token
   20 |                 t++
      |                    ^
      |                    ;
   21 |         }
      |         ~           
a.cc:24:20: error: expected ';' before '}' token
   24 |                 t++
      |                    ^
      |                    ;
   25 |         }
      |         ~
Language: C++

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

#define rep(i,n) for( (i)=0;(i)<(n);++(i) )
#define repr(i,n) for( (i)=(n);(i)>0;==(i) )
#define FOR(i,j,n) for( (i)=(j);(i)<(n);++(i) )
#define forr(i,j,n) for( (i)=(j);(i)>(n);--(i) )
#define debg(a) cout<<(a)<<endl;
#define INF 9999999
#define int long long 
#define str string
#define elif else if

int i,j,k;
int dx,dy;
int a,b,c,x,y,n,m,cnt=0,ans=0;
str s,t;

signed main(){ 
  cin>>s;
  rep(i,4){
    if(s[i]=="2")cnt++;
  }
  debg(cnt);

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:22:12: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   22 |     if(s[i]=="2")cnt++;
Language: C++

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


int main(int argc, char const *argv[])
{
    string A;

    
    for(int i = 0; i ==2; i++)
    {
    
    }
    cout<<i;
    return 0;
}

Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:14:11: error: 'i' was not declared in this scope
   14 |     cout<<i;
      |           ^
Language: C++

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

int main(){
	int n,ans=0;
	cin >> n;
	for(int i=0;i<4;i++){
		if(n%10=2){
			ans++;
		}
		n=n/10;
	}
	cout <<ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:21: error: lvalue required as left operand of assignment
    8 |                 if(n%10=2){
      |                    ~^~~
Language: C++

import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String n = sc.next();
    int ans = 0;
    for(int i = 0; i < 4; i++) {
      if(n.charAt(i) == '2')
        ans++;
    }
    System.out.println(ans);
  }
  

}


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:3:1: error: expected unqualified-id before 'public'
    3 | public class Main {
      | ^~~~~~
Language: C++

#include <iostream>
#include <algorithm>
using namespace std;

int main() {
  int n;
  cin >> n;
  int a[4];
  a[0] = n / 1000;
  a[1] = (n - 1000 * a) / 100;
  a[2] = (n - 1000 * a - 100 * b) / 10;
  a[3] = n % 10;
  int count = 0;
  for(int i = 0; i < 4; i++) {
    if(a[i] == 2) count ++;
  }
  cout << count << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:20: error: invalid operands of types 'int' and 'int [4]' to binary 'operator*'
   10 |   a[1] = (n - 1000 * a) / 100;
      |               ~~~~ ^ ~
      |               |      |
      |               int    int [4]
a.cc:11:20: error: invalid operands of types 'int' and 'int [4]' to binary 'operator*'
   11 |   a[2] = (n - 1000 * a - 100 * b) / 10;
      |               ~~~~ ^ ~
      |               |      |
      |               int    int [4]
a.cc:11:32: error: 'b' was not declared in this scope
   11 |   a[2] = (n - 1000 * a - 100 * b) / 10;
      |                                ^
Language: C++

#include<iostream>
#include<string.h>

using namespace std;
int main()
{
	char n[9999] = 0;
	int a, x = strlen(n);
	cin >> n;
	for (int i = 0; i < x; i++) {
		if (n[i] == 2)a++;
	}
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:24: error: array must be initialized with a brace-enclosed initializer
    7 |         char n[9999] = 0;
      |                        ^
Language: C

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

int main()
{
    char a;
    int sum = 0;
    scanf("%s", a);
    for (int i = 0; strlen(a) == i + 1; i++)
    {
        if (a[i] == 2)
        {
            sum++;
        }
    }

    printf("%d\n", sum);

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:28: error: passing argument 1 of 'strlen' makes pointer from integer without a cast [-Wint-conversion]
   10 |     for (int i = 0; strlen(a) == i + 1; i++)
      |                            ^
      |                            |
      |                            char
In file included from main.c:2:
/usr/include/string.h:407:35: note: expected 'const char *' but argument is of type 'char'
  407 | extern size_t strlen (const char *__s)
      |                       ~~~~~~~~~~~~^~~
main.c:12:14: error: subscripted value is neither array nor pointer nor vector
   12 |         if (a[i] == 2)
      |              ^
Language: C++

#include <iostream>
#include <string>
using namespace std;

int main(){
    string s;
    int ans=0;
    cin >> s;
    if (s[0] == '2')ans++:
    if (s[1] == '2')ans++:
    if (s[2] == '2')ans++:
    if (s[3] == '2')ans++:
    cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:26: error: expected ';' before ':' token
    9 |     if (s[0] == '2')ans++:
      |                          ^
      |                          ;
Language: C++

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

int main() {
 string s;
  cin >> s;
  int answer=0;
  for(int i=0;i<s.size(i);i++){
    if(s.at(i)=='2'){
      answer++;
    }
  }
  cout << answer << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:23: error: no matching function for call to 'std::__cxx11::basic_string<char>::size(int&)'
   10 |   for(int i=0;i<s.size(i);i++){
      |                 ~~~~~~^~~
In file included from /usr/include/c++/14/string:54,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1076:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
 1076 |       size() const _GLIBCXX_NOEXCEPT
      |       ^~~~
/usr/include/c++/14/bits/basic_string.h:1076:7: note:   candidate expects 0 arguments, 1 provided
Language: C++

var
  n,k,i,m,j,t,ans,b,c,d:longint;
  p,q,o,x,y:real;
  s:string;
begin
  readln(s);
  for i:=1 to length(s) do
  if s[i]='2' then inc(n);
  writeln(n);
end.

Compiler output:
a.cc:1:1: error: 'var' does not name a type
    1 | var
      | ^~~
a.cc:3:3: error: 'p' does not name a type
    3 |   p,q,o,x,y:real;
      |   ^
a.cc:4:4: error: found ':' in nested-name-specifier, expected '::'
    4 |   s:string;
      |    ^
      |    ::
a.cc:4:3: error: 's' does not name a type
    4 |   s:string;
      |   ^
a.cc:5:1: error: 'begin' does not name a type
    5 | begin
      | ^~~~~
a.cc:7:3: error: expected unqualified-id before 'for'
    7 |   for i:=1 to length(s) do
      |   ^~~
a.cc:9:10: error: expected constructor, destructor, or type conversion before '(' token
    9 |   writeln(n);
      |          ^
a.cc:10:1: error: 'end' does not name a type
   10 | end.
      | ^~~
Language: C++

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s= sc.next();
        int ans = 0;
       for (int i = 0 ; i< 4 ; i++) {
           if (s.substring(i, i+1).equals("2")) {
               ans++;
           }
       }
        System.out.println(ans);
    }

}


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:3:1: error: expected unqualified-id before 'public'
    3 | public class Main {
      | ^~~~~~
Language: C

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

int main()
{
    char a;
    int sum = 0;
    scanf("%s", &a);
    for (int i = 0; strlen(a) == i - 1; i++)
    {
        if (a[i] == 2)
        {
            sum++;
        }
    }

    printf("%d\n", sum);

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:28: error: passing argument 1 of 'strlen' makes pointer from integer without a cast [-Wint-conversion]
   10 |     for (int i = 0; strlen(a) == i - 1; i++)
      |                            ^
      |                            |
      |                            char
In file included from main.c:2:
/usr/include/string.h:407:35: note: expected 'const char *' but argument is of type 'char'
  407 | extern size_t strlen (const char *__s)
      |                       ~~~~~~~~~~~~^~~
main.c:12:14: error: subscripted value is neither array nor pointer nor vector
   12 |         if (a[i] == 2)
      |              ^
Language: C++

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

int main() {
	string s;
	cin >> s;
	ll ans = 0;
	for (int i = 0;i < s.size();i++) {
		if (s[i] == '2') {
			ans++;
		}
	}
	cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'll' was not declared in this scope
    7 |         ll ans = 0;
      |         ^~
a.cc:10:25: error: 'ans' was not declared in this scope; did you mean 'abs'?
   10 |                         ans++;
      |                         ^~~
      |                         abs
a.cc:13:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   13 |         cout << ans << endl;
      |                 ^~~
      |                 abs
Language: C++

package main

import (
	"fmt"
	"os"
	"strconv"
	"strings"
	"bufio"
)

var (
	sc = bufio.NewScanner(os.Stdin)
	buf = make([]byte, 1000)
)

func scanText() string{
	sc.Scan()
	return sc.Text()
}

func scanTextArray(n int) []string {
	out := make([]string, n)
	for i, v := range(strings.Split(scanText(), "")) {
		out[i] = v
	}
	return out
}

func scanInt() int {
	out, e := strconv.Atoi(scanText())
	if e != nil {
        panic(e)
    }
	return out
}

func scanIntArray(n int) []int {
	out := make([]int, n)
	for i, v := range(strings.Split(scanText(), " ")) {
		num, e := strconv.Atoi(v)
		if e != nil {
			panic(e)
		}
		out[i] = num
	}
	return out
}
//  template end

func main() {
	sc.Buffer(buf, 10000)
	cnt := 0
	for _, v := range scanText() {
		if v == '2' {
			cnt++
		}
	}
	fmt.Println(cnt)

}

Compiler output:
a.cc:1:1: error: 'package' does not name a type
    1 | package main
      | ^~~~~~~
a.cc:21:1: error: 'func' does not name a type
   21 | func scanTextArray(n int) []string {
      | ^~~~
a.cc:29:1: error: 'func' does not name a type
   29 | func scanInt() int {
      | ^~~~
a.cc:37:1: error: 'func' does not name a type
   37 | func scanIntArray(n int) []int {
      | ^~~~
a.cc:50:1: error: 'func' does not name a type
   50 | func main() {
      | ^~~~
Language: C++

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

int main() {
 string s;
  cin >> s;
  int answer=0;
  for(int i=0;i<s.size(i);i++){
    if(s.at(i)==2){
      answer++;
    }
  }
  cout << answer << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:23: error: no matching function for call to 'std::__cxx11::basic_string<char>::size(int&)'
   10 |   for(int i=0;i<s.size(i);i++){
      |                 ~~~~~~^~~
In file included from /usr/include/c++/14/string:54,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1076:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
 1076 |       size() const _GLIBCXX_NOEXCEPT
      |       ^~~~
/usr/include/c++/14/bits/basic_string.h:1076:7: note:   candidate expects 0 arguments, 1 provided
Language: C++

#include <bits/stdc++.h> 
using namespace std;
typedef long long ll;
typedef pair<int,int> p;
const int inf=(1<<30);
#define rep(i,a,n)	for(int i=a;i<n;i++)
#define rrep(i,a,n) for(int i=(a-1);i>=n;i--)

int main(){
	string s;
	cin>>s;
	ans=0;
	rep(i,0,s.length()){
		if(s[i]=='2')ans++;
		else continue;
	}
	cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   12 |         ans=0;
      |         ^~~
      |         abs
Language: C++

import java.util.Scanner;

public class Main{
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a=scan.nextInt();
		int ans=0;
		for(int i=0;i!=4;i++){
			int b=a%10;
			a/=10;
			if(b==2) {ans++;}
		}
		System.out.println(ans);
    }
}

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:3:1: error: expected unqualified-id before 'public'
    3 | public class Main{
      | ^~~~~~
Language: C

#include <iostream>
#include <string>
#include <vector>
#include <deque>
#include <map>
#include <algorithm>
#include <cstdlib>
#include <cmath>
#include <numeric>
#include <utility>

#define ALL_OF(x) (x).begin(), (x).end()
#define REP(i,n) for(int i=0, i##_len=(n); i<i##_len; i++)

typedef long long ll;
using namespace std;

int main() {
    
    int n, ans = 0;
    cin >> n;
    while (n) {
        if (n % 10 == 2) ans++;
        n /= 10;
    }
    cout << ans << endl;
    
}

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


#include "pch.h"
#include <iostream>
#include <string>
#include <utility>
#include <algorithm>
#include <map>
#include <vector>
#include <cmath>
#include <cstdlib>
#include <queue>

using namespace std;

#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define FORR(i, m, n) for(int i = n;i >= m;i--)
#define REPO(i, n) for(int i = 1;i <= n;i++)
#define ll long long
#define INF 999999999
#define MINF -999999999
#define ALL(n) n.begin(),n.end()
#define MP make_pair
#define F first
#define S second

int main()
{
	int ans = 0;
	char c[114514];
	cin >> c;
	REP(i, 4) if (c[i] == '2') ans++;
	cout << ans << endl;
}

  

Compiler output:
a.cc:2:10: fatal error: pch.h: No such file or directory
    2 | #include "pch.h"
      |          ^~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define int long long int
#define mp make_pair
#define pb push_back
#define F first
#define S second
const int N=1000005;
#define M 1000000007
#define double long double
#define BINF 1000000000000000001
#define init(arr,val) memset(arr,val,sizeof(arr))
#define MAXN 150001
const int LG = 22;

#undef int
int main()
{
#define int long long int

ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
	
	int n;
	cin>>n;
	int c=0;

	while(n)
	{
		x=n%10;
		n/=10;
		if(x==2)
			c++;
	}
	cout<<c<<endl;

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:17: error: 'x' was not declared in this scope
   31 |                 x=n%10;
      |                 ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for(int i = a;i < n;i++)
#define INF 1e9
#define fs first
#define sc second
typedef unsigned long long ull;
typedef long long ll;
typedef pair<ll,ll> P;
typedef pair<P,ll> Pll;
typedef pair<ll,P> llP;
typedef pair<P,P> P;


int main(){
	ll n,cnt = 0;
	cin >> n;
	if(n % 10 == 2)cnt++;
	n /= 10;
	if(n % 10 == 2)cnt++;
	n /= 10;
	if(n % 10 == 2)cnt++;
	n /= 10;
	if(n % 10 == 2)cnt++;
	n /= 10;
	cout << cnt << endl;
	return 0;
}


Compiler output:
a.cc:12:19: error: conflicting declaration 'typedef struct std::pair<std::pair<long long int, long long int>, std::pair<long long int, long long int> > P'
   12 | typedef pair<P,P> P;
      |                   ^
a.cc:9:21: note: previous declaration as 'typedef struct std::pair<long long int, long long int> P'
    9 | typedef pair<ll,ll> P;
      |                     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for(int i = a;i < n;i++)
#define INF 1e9
#define fs first
#define sc second
typedef pair<ll,ll> P;
typedef pair<P,ll> Pll;
typedef pair<ll,P> llP;
typedef pair<P,P> P;
typedef unsigned long long ull;
typedef long long ll;


int main(){
	ll n,cnt = 0;
	cin >> n;
	if(n % 10 == 2)cnt++;
	n /= 10;
	if(n % 10 == 2)cnt++;
	n /= 10;
	if(n % 10 == 2)cnt++;
	n /= 10;
	if(n % 10 == 2)cnt++;
	n /= 10;
	cout << cnt << endl;
	return 0;
}


Compiler output:
a.cc:7:14: error: 'll' was not declared in this scope
    7 | typedef pair<ll,ll> P;
      |              ^~
a.cc:7:17: error: 'll' was not declared in this scope
    7 | typedef pair<ll,ll> P;
      |                 ^~
a.cc:7:19: error: template argument 1 is invalid
    7 | typedef pair<ll,ll> P;
      |                   ^
a.cc:7:19: error: template argument 2 is invalid
a.cc:8:16: error: 'll' was not declared in this scope
    8 | typedef pair<P,ll> Pll;
      |                ^~
a.cc:8:18: error: template argument 2 is invalid
    8 | typedef pair<P,ll> Pll;
      |                  ^
a.cc:9:14: error: 'll' was not declared in this scope; did you mean 'Pll'?
    9 | typedef pair<ll,P> llP;
      |              ^~
      |              Pll
a.cc:9:18: error: template argument 1 is invalid
    9 | typedef pair<ll,P> llP;
      |                  ^
a.cc:10:19: error: conflicting declaration 'typedef struct std::pair<int, int> P'
   10 | typedef pair<P,P> P;
      |                   ^
a.cc:7:21: note: previous declaration as 'typedef int P'
    7 | typedef pair<ll,ll> P;
      |                     ^
Language: C++

include<iostream>

using namespace std;

int main(){
  int n,h,w;
  cin>>n>>h>>w;
  
  int ans=0;
  for(int i=0;i<n;i++){
    int a,b;
    cin>>a>>b;
    if(a>=h&&b>=w)ans++;
  }
  cout<<ans<<endl;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<iostream>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:7:3: error: 'cin' was not declared in this scope
    7 |   cin>>n>>h>>w;
      |   ^~~
a.cc:15:3: error: 'cout' was not declared in this scope
   15 |   cout<<ans<<endl;
      |   ^~~~
a.cc:15:14: error: 'endl' was not declared in this scope
   15 |   cout<<ans<<endl;
      |              ^~~~
Language: C++

#include<iosteram>
using namespace std;
int main(){
  int n,a,b;
  cin >> n >> a >> b;
  
  int ans = 0;
  int c,d;
  for(int i = 0; i < n; i++){
    cin >> c >> d;
    if(c >= a && d >= b) ans++;
  }
  cout << ans << endl;
}

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

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=n-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define pb push_back
#define ins insert
#define all(x) (x).begin(),(x).end()
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[8]={1,0,-1,0,1,1,-1,-1};
const ll dx[8]={0,-1,0,1,1,-1,1,-1};
using Graph = vector<vector<int>>;
const ll mod=1000000007;
const int MAX_N = 1000;         // n の最大値
 
double nCk(int n, int k) {
double res=1.0;
for(int i=0; i<n; i++){
res*=0.5;}
for(int i=0; i<k; i++){
res*=(double)(n-i);
res/=(double)(k-i);
}
return res;}
 
int main() {
ll n,h,w cin >>n>>h>>w;
ll a[n]={};
ll b[n]={};
for(ll i=0; i<n; i++){
cin>>a[i]>>b[i];}
ll ca=0;
rep(i,n){
if(a[i]>=h&&b[i]>=w){
ca++}}
cout << ca << endl;}


Compiler output:
a.cc: In function 'int main()':
a.cc:36:10: error: expected initializer before 'cin'
   36 | ll n,h,w cin >>n>>h>>w;
      |          ^~~
a.cc:43:19: error: 'w' was not declared in this scope
   43 | if(a[i]>=h&&b[i]>=w){
      |                   ^
a.cc:44:5: error: expected ';' before '}' token
   44 | ca++}}
      |     ^
      |     ;
Language: C++

#include <cstdio>
int n,h,w;
int main()
{
	scanf("%d%d%d",&n,&h,&w);
  	int a,b;
  	while(n--)
    {
		scanf("%d%d",&a,&b);
      	if((h<=a&&w<=b)||(h<=b&&w<=a)) ans++;
    }
  	printf("%d",ans);
  	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:40: error: 'ans' was not declared in this scope
   10 |         if((h<=a&&w<=b)||(h<=b&&w<=a)) ans++;
      |                                        ^~~
a.cc:12:21: error: 'ans' was not declared in this scope
   12 |         printf("%d",ans);
      |                     ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vll;
#define all(x) (x).begin(), (x).end()
#define endl '\n'
#define fsp(x) cout << fixed << setprecision(x)
const ll inf = LLONG_MAX;
const long double pi = M_PI;
void Yes() {cout << "Yes" << endl;}
void No() {cout << "No" << endl;}
void YES() {cout << "YES" << endl;}
void NO() {cout << "NO" << endl;}

int main() {
  ll n, h, w;
  cin >> n >> h >> w;
  vll a(n), b(n);
  ll ans = 0
  for (ll i = 0; i < n; i++) {
    cin >> a[i] >> b[i];
    if (a[i] <= h && b[i] <= w) ans++;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:3: error: expected ',' or ';' before 'for'
   20 |   for (ll i = 0; i < n; i++) {
      |   ^~~
a.cc:20:18: error: 'i' was not declared in this scope
   20 |   for (ll i = 0; i < n; i++) {
      |                  ^
Language: C++

#include <bits/stdc++.h>
 
using namespace std;
int main()
{
  int n;
  long int h,w;
  scanf("%d%ld%ld",&n,&h,&w);
  long int a[n],b[n];
  int i,cnt=0;
  for(i=0;i<n;++i)
  {
    scanf("%ld%ld",&a[i],&b[i]);
    if(a[i]<=h && b[i]<=w)
         cnt++;
  }
  
  printf("%d",cnt);
}
  
#include <bits/stdc++.h>

using namespace std;
int main()
{
  int n;
  long int h,w;
  scanf("%d%ld%ld",&n,&h,&w);
  long int a[n],b[n];
  int i,cnt=0;
  for(i=0;i<n;++i)
  {
    scanf("%ld%ld",&a[i],&b[i]);
    if(a[i]>=h && b[i]>=w)
         cnt++;
  }
  
  printf("%d",cnt);
}
  


Compiler output:
a.cc:24:5: error: redefinition of 'int main()'
   24 | int main()
      |     ^~~~
a.cc:4:5: note: 'int main()' previously defined here
    4 | int main()
      |     ^~~~
Language: C++

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

int main() {
long long n,h,w;
cin >> n>>h>>w;
vector<long long>a(n);
vector<long long>b(n);
int ans=0;
for(int i=0;i<n;i++){
    if(a(i)>=h&&b(i)>=w){
        ans++;
    }
}
cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:9: error: no match for call to '(std::vector<long long int>) (int&)'
   11 |     if(a(i)>=h&&b(i)>=w){
      |        ~^~~
a.cc:11:18: error: no match for call to '(std::vector<long long int>) (int&)'
   11 |     if(a(i)>=h&&b(i)>=w){
      |                 ~^~~
Language: C++

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

int main () {
  int N , H , W;
  cin >> N >> H >> W;
  vector <int> A();
  vector <int> B();
  for(int i = 0; i < N; i++){
    cin >> A.at(i) >> B.at(i);
  }
  int answer = 0;
  for(int i = 0; i < N; i++){
    if(A.at(i) >= H && B.at(i) >= W)
    answer++;
  }
  cout << answer << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:17: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
    7 |   vector <int> A();
      |                 ^~
a.cc:7:17: note: remove parentheses to default-initialize a variable
    7 |   vector <int> A();
      |                 ^~
      |                 --
a.cc:8:17: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
    8 |   vector <int> B();
      |                 ^~
a.cc:8:17: note: remove parentheses to default-initialize a variable
    8 |   vector <int> B();
      |                 ^~
      |                 --
a.cc:10:14: error: request for member 'at' in 'A', which is of non-class type 'std::vector<int>()'
   10 |     cin >> A.at(i) >> B.at(i);
      |              ^~
a.cc:10:25: error: request for member 'at' in 'B', which is of non-class type 'std::vector<int>()'
   10 |     cin >> A.at(i) >> B.at(i);
      |                         ^~
a.cc:14:10: error: request for member 'at' in 'A', which is of non-class type 'std::vector<int>()'
   14 |     if(A.at(i) >= H && B.at(i) >= W)
      |          ^~
a.cc:14:26: error: request for member 'at' in 'B', which is of non-class type 'std::vector<int>()'
   14 |     if(A.at(i) >= H && B.at(i) >= W)
      |                          ^~
Language: C

#include <stdio.h>

int main(){
  int n,h,w;
  int i;
  int count=0;
  int h_temp,w_temp;
  
  scanf("%d %d %d",&n,&h,&w);
  
  for(i=0;i<n;i++){
    scanf("%d %d",&h_temp,&w_temp);
    if(h<=h_tmp && w<=w_temp){
      count++;
    }
  }
  printf("%d",count);
}

Compiler output:
main.c: In function 'main':
main.c:13:11: error: 'h_tmp' undeclared (first use in this function); did you mean 'h_temp'?
   13 |     if(h<=h_tmp && w<=w_temp){
      |           ^~~~~
      |           h_temp
main.c:13:11: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <iostream>
using namespace std;int main(){int n,h,w,a,b,cnt=0;cin>>n>>h>>w;for(int i=0;i<n;i++){cin>>a>>b;if(a>=h&&b>=w)cnt++}cout<<cnt<<endl;return 0;}


Compiler output:
a.cc: In function 'int main()':
a.cc:2:115: error: expected ';' before '}' token
    2 | using namespace std;int main(){int n,h,w,a,b,cnt=0;cin>>n>>h>>w;for(int i=0;i<n;i++){cin>>a>>b;if(a>=h&&b>=w)cnt++}cout<<cnt<<endl;return 0;}
      |                                                                                                                   ^
      |                                                                                                                   ;
Language: C++

#include<iostream>
#include<string>
#include<algorithm>	
#include<cmath>
using namespace std;
int main() {
	long long n, h, w, a, b, sum = 0; cin >> n >> h >> w;
	for (int h = 1; h < n; h++) {
		cin >> a >> b;
		if(a >= h && b >= w){
			sum++;
		}
	cout << sum << endl;
	cin >> n;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:2: error: expected '}' at end of input
   15 | }
      |  ^
a.cc:6:12: note: to match this '{'
    6 | int main() {
      |            ^
Language: C++

#include <bits/stdc++.h>
#define cinf(n,x,y) for(int i=0;i<(n);i++) cin >> x[i]>>y[i];
typedef long long int ll;
using namespace std;

int main(){
    int n.h.w; cin>>n>>h>>w;
    vecotr<int>a(n),b(n);
    cinf(n,a,b);
    int cnt=0;
    for(int i=0;i<n;i++){
    	if(a[i]<=h && b[i]<=w)cnt++;
    }
    cout << cnt << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:10: error: expected initializer before '.' token
    7 |     int n.h.w; cin>>n>>h>>w;
      |          ^
a.cc:7:21: error: 'n' was not declared in this scope; did you mean 'yn'?
    7 |     int n.h.w; cin>>n>>h>>w;
      |                     ^
      |                     yn
a.cc:7:24: error: 'h' was not declared in this scope
    7 |     int n.h.w; cin>>n>>h>>w;
      |                        ^
a.cc:7:27: error: 'w' was not declared in this scope
    7 |     int n.h.w; cin>>n>>h>>w;
      |                           ^
a.cc:8:5: error: 'vecotr' was not declared in this scope
    8 |     vecotr<int>a(n),b(n);
      |     ^~~~~~
a.cc:8:12: error: expected primary-expression before 'int'
    8 |     vecotr<int>a(n),b(n);
      |            ^~~
a.cc:9:12: error: 'a' was not declared in this scope
    9 |     cinf(n,a,b);
      |            ^
a.cc:2:51: note: in definition of macro 'cinf'
    2 | #define cinf(n,x,y) for(int i=0;i<(n);i++) cin >> x[i]>>y[i];
      |                                                   ^
a.cc:9:14: error: 'b' was not declared in this scope
    9 |     cinf(n,a,b);
      |              ^
a.cc:2:57: note: in definition of macro 'cinf'
    2 | #define cinf(n,x,y) for(int i=0;i<(n);i++) cin >> x[i]>>y[i];
      |                                                         ^
a.cc:12:12: error: 'a' was not declared in this scope
   12 |         if(a[i]<=h && b[i]<=w)cnt++;
      |            ^
a.cc:12:23: error: 'b' was not declared in this scope
   12 |         if(a[i]<=h && b[i]<=w)cnt++;
      |                       ^
Language: Java

import java.util.*;

public class Main {
	static int h;
	static int w;
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		h = sc.nextInt();
		w = sc.nextInt();
		int count = 0;
		for (char c : n.toCharArray()) {
			if (check(sc.nextInt(), sc.nextInt())) {
				count++;
			}
		System.out.println(count);
	}
	
	static boolean check(int hh, int ww) {
		if (hh >= h && ww >= w) {
			return true;
		}
		return false;
	}
}


Compiler output:
Main.java:19: error: illegal start of expression
	static boolean check(int hh, int ww) {
	^
1 error
Language: C

#include <stdio.h>

int main(){
	int N, H, W, A, B, i, ans = 0;
	scanf("%d%d%d", &N, &H, &W);
	for(i = 0; i < N; i++){
		scanf("%d%d", &A, &B){
			if(A <= H && B <= W){
				ans++;
			}
		}
	}
	printf("%d\n", ans);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:38: error: expected ';' before '{' token
    7 |                 scanf("%d%d", &A, &B){
      |                                      ^
      |                                      ;